In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).

Context: The genus Psammolestes belongs to the subfamily Triatominae . 3 species : Psammolestes arthuri ( Pinto , 1926 ) ( Tc ) Psammolestes coreodes Bergroth , 1911 Psammolestes tertius Lent & Jurberg , 1965 ( Tc ) ( Tc ) means associated with Trypanosoma cruzi, Triatoma infestans, commonly called winchuka "(vinchuca)" in Argentina, Bolivia and Chile, barbeiro in Brazil and also known as "kissing bug" or "barber bug" in English, is a blood-sucking bug (like all the members of its subfamily Triatominae) and the most important vector of "Trypanosoma cruzi" which can lead to Chagas disease. It is widespread in the Southern Cone countries of South America; that is, in Bolivia, Argentina, Uruguay, Paraguay, Chile, Brazil and Peru. In all these countries "T. infestans" is almost an exclusively domestic species, except in Bolivia where sylvatic forms have been recorded in rock piles in association with wild guinea pigs. This region has joined the control intervention called "Southern Cone Initiative" managed by the PAHO., Rhodnius is a genus of assassin bugs in the subfamily Triatominae (the kissing bugs), and is an important vector in the spread of Chagas disease. The "Rhodnius" species were important models for Sir Vincent Wigglesworth's studies of insect physiology, specifically growth and development., Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones). Vertebrates represent the overwhelming majority of the phylum Chordata, with currently about 64,000 species described. Vertebrates include the jawless fish and the jawed vertebrates, which include the cartilaginous fish (sharks and rays) and the bony fish. , The Reduviidae are a large cosmopolitan family of the order Hemiptera (true bugs). They are slightly unusual overall, but very common among the Hemiptera because almost all are terrestrial ambush predators (most other predatory Hemiptera are aquatic). The main examples of nonpredatory Reduviidae are some blood-sucking ectoparasites in the subfamily Triatominae. Though spectacular exceptions are known, most members of the family are fairly easily recognizable; they have a relatively narrow neck, sturdy build, and formidable curved proboscis (sometimes called a rostrum). Large specimens should be handled with caution, if at all, because they sometimes defend themselves with a very painful stab from the proboscis., Argentina, officially the Argentine Republic, is a federal republic in the southern half of South America. Sharing the bulk of the Southern Cone with its neighbor Chile to the west, the country is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. With a mainland area of , Argentina is the eighth-largest country in the world, the second largest in Latin America, and the largest Spanish-speaking one. The country is subdivided into twenty-three provinces (singular "provincia") and one autonomous city ("ciudad autónoma"), Buenos Aires, which is the federal capital of the nation as decided by Congress.
The provinces and the capital have their own constitutions, but exist under a federal system., Rhodnius prolixus is the second most important triatomine vector of the Chagas parasite due to both its sylvatic and domestic populations in northern South America as well as to its exclusively domestic populations in Central America. It has a wide range of ecotopes, mainly savanna and foothills with an altitude of between 500 meters to 1,500 meters (1600 feet to 4,900 feet) above sea level and temperatures of 16 °C to 28 °C (61 °F to 82 °F). Sylvatic "R. prolixus", as virtually all "Rhodnius" spp., is primarily associated with palm tree habitats and has a wide range of hosts including birds, rodents, marsupials, sloths, and reptiles., Trypanosoma cruzi is a species of parasitic euglenoids. Amongst the protozoa, the trypanosomes characteristically bore tissue in another organism and feed on blood (primarily) and also lymph. This behaviour causes disease or the likelihood of disease that varies with the organism: for example, trypanosomiasis in humans (Chagas disease in South America ), dourine and surra in horses, and a brucellosis-like disease in cattle. Parasites need a host body and the haematophagous insect triatomine (descriptions "assassin bug", "cone-nose bug", and "kissing bug") is the major vector in accord with a mechanism of infection. The triatomine likes the nests of vertebrate animals for shelter, where it bites and sucks blood for food. Individual triatomines infected with protozoa from other contact with animals transmit trypanosomes when the triatomine deposits its faeces on the host's skin surface and then bites. Penetration of the infected faeces is further facilitated by the scratching of the bite area by the human or animal host., Triatoma is a genus of assassin bug in the subfamily Triatominae (kissing bugs). The members of "Triatoma" (like all members of Triatominae) are blood-sucking insects that can transmit serious diseases, such as Chagas disease. Their saliva may also trigger allergic reactions in sensitive individuals, up to and including severe anaphylactic shock., Chagas disease, also known as American trypanosomiasis, is a tropical parasitic disease caused by the protozoan "Trypanosoma cruzi". It is spread mostly by insects known as Triatominae or kissing bugs. The symptoms change over the course of the infection. In the early stage, symptoms are typically either not present or mild, and may include fever, swollen lymph nodes, headaches, or local swelling at the site of the bite. After 812 weeks, individuals enter the chronic phase of disease and in 6070% it never produces further symptoms. The other 30 to 40% of people develop further symptoms 10 to 30 years after the initial infection, including enlargement of the ventricles of the heart in 20 to 30%, leading to heart failure. An enlarged esophagus or an enlarged colon may also occur in 10% of people.
"T. cruzi" is commonly spread to humans and other mammals by the blood-sucking "kissing bugs" of the subfamily Triatominae. These insects are known by a number of local names, including: "vinchuca" in Argentina, Bolivia, Chile and Paraguay, "barbeiro" (the barber) in Brazil, "pito" in Colombia, "chinche" in Central America, and "chipo" in Venezuela. The disease may also be spread through blood transfusion, organ transplantation, eating food contaminated with the parasites, and by vertical transmission (from a mother to her fetus). Diagnosis of early disease is by finding the parasite in the blood using a microscope. Chronic disease is diagnosed by finding antibodies for "T. cruzi" in the blood.
Prevention mostly involves eliminating kissing bugs and avoiding their bites. Other preventative efforts include screening blood used for transfusions. A vaccine has not been developed as of 2013. Early infections are treatable with the medication benznidazole or nifurtimox. Medication nearly always results in a cure if given early, but becomes less effective the longer a person has had Chagas disease. When used in chronic disease, medication may delay or prevent the development of endstage symptoms. Benznidazole and nifurtimox cause temporary side effects in up to 40% of people including skin disorders, brain toxicity, and digestive system irritation.
It is estimated that 7 to 8 million people, mostly in Mexico, Central America and South America, have Chagas disease as of 2013. In 2006, Chagas was estimated to result in 12,500 deaths per year. Most people with the disease are poor, and most people with the disease do not realize they are infected. Large-scale population movements have increased the areas where Chagas disease is found and these include many European countries and the United States. These areas have also seen an increase in the years up to 2014. The disease was first described in 1909 by Carlos Chagas after whom it is named. It affects more than 150 other animals., The members of Triatominae , a subfamily of Reduviidae, are also known as conenose bugs, kissing bugs, assassin bugs, or vampire bugs. Other local names for them used in the Latin Americas include barbeiros, vinchucas, pitos and chinches. Most of the 130 or more species of this subfamily are haematophagous, i.e. feeds on vertebrate blood; a very few species feed on other invertebrates (Sandoval "et al." 2000, 2004). They are mainly found and widespread in the Americas, with a few species present in Asia, Africa, and Australia. These bugs usually share shelter with nesting vertebrates, from which they suck blood. In areas where Chagas disease occurs (from the southern United States to northern Argentina), all triatomine species are potential vectors of the Chagas disease parasite "Trypanosoma cruzi", but only those species (such as "Triatoma infestans" and "Rhodnius prolixus") that are well adapted to living with humans are considered important vectors., Subject: psammolestes, Relation: parent_taxon, Options: (A) area (B) argentina (C) chordata (D) insects (E) protozoa (F) reduviidae (G) rhodnius (H) triatoma (I) triatominae (J) trypanosoma (K) vertebrata
reduviidae

Context: David Warren Ellefson (born November 12, 1964) is an American bassist and 2nd longest serving member of the American thrash metal band Megadeth from 1983 to 2002 and again from 2010. He has also been referred to as "Junior" to differentiate him from his bandmate Dave Mustaine, but does not go by this name professionally. Ellefson currently resides in Scottsdale, Arizona. In addition to playing bass guitar in Megadeth, Ellefson also has various side projects which include Temple of Brutality, F5, and Killing Machine., W.A.S.P. is an American heavy metal band formed in 1982 by Blackie Lawless, who is the only remaining original member of the band. They emerged from the same Los Angeles scene that spawned Van Halen, Mötley Crüe, Dokken, Ratt, Quiet Riot, Guns N' Roses, Great White, L.A. Guns, Leatherwolf and others. The band's popularity peaked in the 1980s, yet they continue to record and tour, making them one of the most enduring of the West Coast heavy metal bands. W.A.S.P. gained notoriety for their shock rock themed image, lyrics and live performances. They have sold over 12 million copies of their albums., L.A. Guns are an American hard rock band from Los Angeles, California, formed in 1983. As of 2014, the lineup consists of Phil Lewis (lead vocals, rhythm guitar), Steve Riley (drums, percussion, backing vocals), Kenny Kweens (bass guitar, backing vocals), and Michael Grant (lead guitar, backing vocals). The first incarnation of the group was formed by Tracii Guns in 1983 and merged with fellow Los Angeles group Hollywood Rose to form Guns N' Roses in 1984. In 1985, the group was reformed by Guns and singer Paul Black adding Mick Cripps and Nickey Alexander. Black would soon be replaced by former Girl singer Phil Lewis while former Faster Pussycat bassist Kelly Nickels was added to the group. Later, Alexander would be replaced by former W.A.S.P. drummer Steve Riley with this being known as the "classic lineup" of L.A. Guns. They achieved moderate chart success in the late 1980s and early 1990s. However, the group went through numerous lineup changes (with Riley being the most consistent member) and failed to regain mainstream attention., David Scott "Dave" Mustaine (born September 13, 1961) is an American musician, singer, songwriter, actor and author. He is best known as the co-founder, guitarist, and lead singer of the American thrash metal band Megadeth, and the original lead guitarist of the American thrash metal band Metallica., Mötley Crüe was an American glam metal band formed in Los Angeles, California on January 17, 1981. The group was founded by bass guitarist Nikki Sixx and drummer Tommy Lee, lead singer Vince Neil and lead guitarist Mick Mars. Mötley Crüe has sold more than 100 million records worldwide including 25 million in the US, making them one of the world's best-selling bands of all time., California is the most populous state in the United States and the third most extensive by area. Located on the western (Pacific Ocean) coast of the U.S., California is bordered by the other U.S. states of Oregon, Nevada, and Arizona and shares an international border with the Mexican state of Baja California. The state capital is Sacramento. Los Angeles is California's most populous city, and the country's second largest after New York City. The state also has the nation's most populous county, Los Angeles County, and its largest county by area, San Bernardino County., Los Angeles (Spanish for "The Angels"), officially the City of Los Angeles and often known by its initials L.A., is the second-most populous city in the United States (after New York City), the most populous city in California and the county seat of Los Angeles County. Situated in Southern California, Los Angeles is known for its mediterranean climate, ethnic diversity, sprawling metropolis, and as a major center of the American entertainment industry. Los Angeles lies in a large coastal basin surrounded on three sides by mountains reaching up to and over ., Great White is an American hard rock band, formed in Los Angeles in 1977. The band gained popularity during the 1980s and early 1990s. The band released several albums in the late 1980s and gained airplay on MTV with music videos for songs like "Once Bitten, Twice Shy". The band reached their peak popularity with the album "...Twice Shy" in 1989., Judas Priest are a British heavy metal band formed in Birmingham, England, in 1969. The band has sold close to 50 million albums to date. MTV ranked them the second greatest metal band of all time. Despite an innovative and pioneering body of work in the latter half of the 1970s, the band struggled with indifferently produced records, repeated changes of drummer and a lack of major commercial success or attention until 1980, when they adopted a more simplified sound on the album "British Steel", which helped shoot them to rock superstar status. In 1989, they were named as defendants in an unsuccessful lawsuit alleging that subliminal messages on the song "Better By You, Better Than Me" had caused the suicide attempts of two young men., Van Halen is an American hard rock band formed in Pasadena, California, in 1972. From 1974 until 1985, the band consisted of guitarist Eddie Van Halen, vocalist David Lee Roth, drummer Alex Van Halen, and bassist Michael Anthony., Blackie Lawless (born Steven Edward Duren; September 4, 1956) is an American songwriter and musician best known as the lead singer and rhythm guitarist (formerly bassist) for the heavy metal band W.A.S.P., Guns N' Roses is an American hard rock band from Los Angeles formed in 1985. The lineup, when first signed to Geffen Records in 1986, consisted of vocalist Axl Rose, lead guitarist Slash, rhythm guitarist Izzy Stradlin, bassist Duff McKagan, and drummer Steven Adler. The current lineup consists of Rose, Slash, McKagan, keyboardists Dizzy Reed and Melissa Reese, guitarist Richard Fortus and drummer Frank Ferrer. The band has released six studio albums, accumulating sales of more than 100 million records worldwide, including shipments of 45 million in the United States, making Guns N' Roses one of the world's best-selling bands of all time., Warlock were a German heavy metal band , assembled in 1982 with members of the underground bands Snakebite and Beast . The band gained popularity and some commercial success in Europe in the mid- 1980s , due also to the personality and stage presence of lead vocalist Doro Pesch . Warlock supported on tour successful metal bands , such as W.A.S.P. , Judas Priest , Dio and Megadeth . By the end of the decade , Doro Pesch was the sole original member who remained in the band and she was forced to change the name to Doro for legal reasons . Doro , the band , continues to play several songs taken from the Warlock repertoire in their live shows . The band has reunited for festival appearances and special occasions since 2003 , under the name Warlock 1986 ., Shock rock is an umbrella term for artists who combine rock music or metal with highly theatrical live performances emphasizing shock value. Performances may include violent or provocative behavior from the artists, the use of attention-grabbing imagery such as costumes, masks, or face paint, or special effects such as pyrotechnics or fake blood. Shock rock also often includes elements of horror., Megadeth is an American heavy thrash metal band from Los Angeles, California. Guitarist Dave Mustaine and bassist David Ellefson formed the band in 1983 shortly after Mustaine's dismissal from Metallica. A pioneer of the American thrash metal scene, the band is credited as one of the genre's "big four" with Anthrax, Metallica and Slayer, responsible for thrash metal's development and popularization. Megadeth plays in a technical style, featuring fast rhythm sections and complex arrangements. Themes of death, war, politics and religion are prominent in the group's lyrics., Quiet Riot is an American heavy metal band, best known for their hit singles "Metal Health" and "Cum on Feel the Noize." The band was founded in 1973, by guitarist Randy Rhoads and bassist Kelly Garni under the name Mach 1. They then changed the name to Little Women, before settling on Quiet Riot in May 1975. The band's name was inspired by a conversation with Rick Parfitt of the British band Status Quo, in which Parfitt said he'd like to name a band "Quite Right," and his thick English accent made it sound like he was saying "Quiet Riot." The band is ranked at No. 100 on VH1's 100 Greatest Artists of Hard Rock., MTV (originally an initialism of Music Television) is an American cable and satellite television channel owned by Viacom Media Networks (a division of Viacom) and headquartered in New York City. Launched on August 1, 1981, the channel originally aired music videos as guided by television personalities known as "video jockeys" (VJs). In its early years, MTV's main target demographic was young adults, but today it is primarily towards teenagers, high school students and college students. MTV has toned down its music video programming significantly in recent years, and its programming now consists mainly of original reality, comedy and drama programming and some off-network syndicated programs and films, with limited music video programming in off-peak time periods. It has received criticism towards this change of focus, both by certain segments of its audience and musicians. MTV's influence on its audience, including issues involving censorship and social activism, has also been a subject of debate for several years., Metallica is an American heavy metal band formed in Los Angeles, California. The band was formed in 1981 when vocalist/guitarist James Hetfield responded to an advertisement posted by drummer Lars Ulrich in a local newspaper. Metallica's current line-up comprises founding members Hetfield and Ulrich, longtime lead guitarist Kirk Hammett and bassist Robert Trujillo. Guitarist Dave Mustaine and bassists Ron McGovney, Cliff Burton and Jason Newsted are former members of the band., Ratt (stylized as RATT) is an American heavy metal band that had significant commercial success in the 1980s, with their albums having been certified as gold, platinum, and multi-platinum by the RIAA. The group is perhaps best known for hit singles such as "Round and Round" and "Lay It Down", tracks that ranked on Billboard's top 40 at No. 12 and No. 40, respectively, as well as other songs such as "Wanted Man", "You're in Love" and "Dance". Along with groups such as friendly rivals Mötley Crüe, Ratt has been recognized as instrumental in the formation of the early 1980s Los Angeles glam metal scene, also known as "hair metal" or "pop metal"., Thrash metal is an extreme subgenre of heavy metal music characterized by its fast tempo and overall aggression. The songs usually use fast percussive beats and low-register guitar riffs, overlaid with shredding-style lead work. The lyrics often deal with social issues and reproach for The Establishment, using direct and denunciatory language, an approach borrowed from hardcore punk., Leatherwolf is an American heavy metal band that formed in Huntington Beach, California in 1981. They split up in 1991, but reunited in 1999. The group is also nicknamed the "Triple Axe Attack" for pioneering the use of a 3-guitar line-up in heavy metal. Currently comprising vocalist and guitarist Michael Olivieri, guitarists Rob Math and Joey Tafolla, bassist Patrick Guyton, and drummer Dean Roberts, the band has released five studio albums. Leatherwolf has gone through many line-up changes, leaving Roberts as the only constant member. Though the band continues to perform live, they have not released any studio material since their 2007 album "New World Asylum"., Birmingham is a major city and metropolitan borough of West Midlands, England. It is the largest and most populous British city outside London, with a population in 2014 of 1,101,360. The city is in the West Midlands Built-up Area, the third most populous urban area in the United Kingdom, with a population of 2,440,986 at the 2011 census. Birmingham's metropolitan area is the second most populous in the UK with a population of 3.8 million. This also makes Birmingham the 9th most populous metropolitan area in Europe., "Better by You, Better than Me" is a 1969 song by the English rock band Spooky Tooth. The song was covered in 1978 by heavy metal band Judas Priest., Slayer is an American thrash metal band from Huntington Park, California, formed in 1981 by guitarist Kerry King and drummer Dave Lombardo. Slayer rose to fame with its 1986 release "Reign in Blood", and is credited as one of the "big four" thrash metal bands, along with Metallica, Megadeth, and Anthrax. Since its debut album in 1983, the band has released twelve studio albums, two live albums, a box set, six music videos, two extended plays and a cover album. Four of the band's studio albums have received gold certification in the United States. The band has received five Grammy nominations, winning one in 2007 for the song "Eyes of the Insane", and one in 2008 for the song "Final Six" (both from 2006's "Christ Illusion"). Slayer has also played at several music festivals worldwide, including Unholy Alliance, Download and Ozzfest., Subject: warlock , Relation: genre, Options: (A) album (B) country (C) entertainment (D) genre (E) glam metal (F) health (G) heavy metal (H) heavy metal music (I) horror (J) image (K) james (L) love (M) music (N) music video (O) percussion (P) politics (Q) pop (R) rhythm (S) rock (T) rock music (U) song (V) television (W) thrash metal (X) urban (Y) various (Z) war ([) western
heavy metal music

Context: An independent city or independent town is a city or town that does not form part of another general-purpose local government entity (such as a county)., The Central German Metropolitan Region is one of the so-called metropolitan regions in Germany. It is centered on the major cities of Leipzig and Halle, extending over Central German parts of the states of Saxony-Anhalt, Thuringia and Saxony. The Central German metropolitan region is the only one entirely located within the new states of Germany., Chemnitz University of Technology is located in the town of Chemnitz in Germany. With over 10000 students it is the third largest university in Saxony and around 750 international students from 100 universities all over the world are enrolled each year. It was founded in 1836 as Royal Mercantile College ("Königliche Gewerbeschule") and became a technical university in 1986. Situated in the centre of the 'Wissenschaftsregion' ('science region') Chemnitz, Technische Universität (TU) Chemnitz hosts about 11,000 students from 75 countries. With approximately 2,000 employees in science, engineering and management, TU Chemnitz counts among the most important employers in the region. Today, TU Chemnitz stands for distinctively-profiled and outstanding research. Within the key research areas 'Energy-efficient Production Processes', 'Smart Systems and Materials' and 'Human Factors in Technology' solutions for the challenges of tomorrow are developed.The main issues regarding economic and social developments are influenced by mega trends such as globalization, demographic change and the availability of resources. The profile of TU Chemnitz is characterized by the interaction of the key research areas mentioned above and has generated a unique constellation of competencies across eight faculties. Thanks to this constellation, Chemnitz develops into an internationally visible research hub for future value creation processes., The Chemnitz Opera ( Opernhaus Chemnitz ) is an opera house and opera company in Chemnitz . The building , designed by the German architect Richard Möbius , was constructed between 1906 and 1909 . Following its destruction during World War II , it was reconstructed between 1947 and 1951 . It was renovated again in 1988 - 1992 , and is considered to be one of the most modern opera houses in Europe . The house can accommodate 720 patrons ., Performing arts are a form of art in which artists use their voices and/or their bodies, often in relation to other objects, to convey artistic expression. It is different from visual arts, which is when artists use paint/canvas or various materials to create physical or static art objects. Performing arts include several disciplines but every one is performed in front of live audiences., The Ore Mountains (both literally "ore mountains") in Central Europe have formed a natural border between Saxony and Bohemia for around 800 years, from the 12th to the 20th centuries. Today, the border between Germany and the Czech Republic runs just north of the main crest of the mountain range. The highest peaks are the Klínovec (German: "Keilberg"), which rises to above sea level and the Fichtelberg., Chemnitz, known from 1953 to 1990 as Karl-Marx-Stadt, is the third-largest city in the Free State of Saxony, Germany. Chemnitz is an independent city which is not part of any county and seat of the "Landesdirektion Sachsen". Located in the northern foothills of the Ore Mountains, it is part of the Central German Metropolitan Region. The city's economy is based on the service sector and manufacturing industry. Chemnitz University of Technology has around 10,000 students., An opera house is a theatre building used for opera performances that consists of a stage, an orchestra pit, audience seating, and backstage facilities for costumes and set building. While some venues are constructed specifically for operas, other opera houses are part of larger performing arts centers., Opera (English plural: "operas"; Italian plural: "opere" ) is an art form in which singers and musicians perform a dramatic work combining text (libretto) and musical score, usually in a theatrical setting. In traditional opera, singers do two types of singing: recitative, a speech-inflected style and arias, a more melodic style. Opera incorporates many of the elements of spoken theatre, such as acting, scenery, and costumes and sometimes includes dance. The performance is typically given in an opera house, accompanied by an orchestra or smaller musical ensemble, which since the early 19th century has been led by a conductor., An orchestra pit is the area in a theater (usually located in a lowered area in front of the stage) in which musicians perform. Orchestral pits are utilized in forms of theatre that require music (such as opera and ballet) or in cases when incidental music is required. The conductor is typically positioned at the front of the orchestral pit facing the stage., Subject: chemnitz opera, Relation: located_in_the_administrative_territorial_entity, Options: (A) central (B) chemnitz (C) crest (D) free state (E) leipzig (F) mountain (G) north (H) northern (I) of (J) saxony

saxony