input question: Information: - The Russian Airborne Troops or VDV (from "Vozdushno-desantnye voyska Rossii", Russian: - , ; Air-landing Forces) is a military branch of the Armed Forces of the Russian Federation. They are an elite force, on par with the Strategic Rocket Forces and the Aerospace Defence Forces. First formed before World War II, the force undertook two significant airborne operations and a number of smaller jumps during the war and for many years after 1945 was the largest airborne force in the world. The force was split after the dissolution of the Soviet Union, losing divisions to Belarus and Ukraine, and has been reduced in size. - In the Zone of Special Attention is a 1978 Soviet action movie directed by Andrei Malyukov. It achieved cult film status among several generations of the Russian Airborne Troops and veterans, and, along with "Hit Back", it became part of their popular culture. The Soviet audience was approximately 35.4 million. - Hit Back ( Russian : , translit . Otvetnyy khod ) is a 1981 Soviet action movie directed by Mikhail Tumanishvili . It is a sequel to In the Zone of Special Attention . - A cult film, also commonly referred to as a cult classic, is a film that has acquired a cult following. Cult films are known for their dedicated, passionate fanbase, an elaborate subculture that engage in repeated viewings, quoting dialogue, and audience participation. Inclusive definitions allow for major studio productions, especially box office bombs, while exclusive definitions focus more on obscure, transgressive films shunned by the mainstream. The difficulty in defining the term and subjectivity of what qualifies as a cult film mirror classificatory disputes about art. The term "cult film" itself was first used in the 1970s to describe the culture that surrounded underground films and midnight movies, though "cult" was in common use in film analysis for decades prior to that. What is the relationship between 'hit back' and 'film'????
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input question: Information: - Cygnus OB2 is an OB association that is home to some of the most massive and most luminous stars known, including suspected Luminous blue variable Cyg OB2 #12. It also includes one of the largest known stars, NML Cygni. The region is embedded within a wider one of star formation known as Cygnus X, which is one of the most luminous objects in the sky at radio wavelengths. The region is approximately 1,400 parsecs from Earth in the constellation of Cygnus. - Cygnus OB2 # 8A or TYC 3161 - 01325 - 1 is a double - lined spectroscopic binary with a period of 21.9 days . It is located near the centre of the Cygnus OB2 association . - Luminous blue variables (LBVs) are massive evolved stars that show unpredictable and sometimes dramatic variations in both their spectra and their brightness. They are also known as S Doradus variables after S Doradus, one of the brightest stars of the Large Magellanic Cloud. They are extraordinarily rare with just 20 objects listed in the General Catalogue of Variable Stars as SDor, and a number of these are no longer considered to be LBVs. What is the relationship between 'cygnus ob2-8a' and 'star'????
output answer: instance of

input question: Information: - Immunodeficiency (or immune deficiency) is a state in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. Most cases of immunodeficiency are acquired ("secondary") due to extrinsic factors that affect the patient's immune system. Examples of these extrinsic factors include HIV infection, extremes of age, and environmental factors, such as nutrition. In the clinical setting, the immunosuppression by some drugs, such as steroids, can be either an adverse effect or the intended purpose of the treatment. Examples of such use is in organ transplant surgery as an anti-rejection measure and in patients suffering from an overactive immune system, as in autoimmune diseases. Some people are born with intrinsic defects in their immune system, or primary immunodeficiency. A person who has an immunodeficiency of any kind is said to be immunocompromised. An immunocompromised person may be particularly vulnerable to opportunistic infections, in addition to normal infections that could affect everyone. Immunodeficiency also decreases cancer immunosurveillance, in which the immune system scans the body's cells and kills neoplastic ones. - A prion ( i / prin / ) is an infectious agent thought to be the cause of the transmissible spongiform encephalopathies ( TSEs ) . It is composed entirely of protein material , called PrP ( short for prion protein ) , that can fold in multiple , structurally distinct ways , at least one of which is transmissible to other prion proteins , leading to disease that is similar to viral infection . The word prion , coined in 1982 by Stanley B. Prusiner -- derived from the words protein and infection , hence prion -- is short for '' proteinaceous infectious particle '' , in reference to its ability to self - propagate and transmit its conformation to other proteins . Prions were initially identified as the causative agent in animal TSEs such as bovine spongiform encephalopathy ( BSE ) -- known popularly as '' mad cow disease '' -- and scrapie in sheep . Human prion diseases include Creutzfeldt - Jakob Disease ( CJD ) and its variant ( vCJD ) , Gerstmann -- Straussler -- Scheinker syndrome , Fatal Familial Insomnia , and kuru . A recent study concluded that multiple system atrophy ( MSA ) , a rare human neurodegenerative disease , is caused by a misfolded version of a protein called alpha - synuclein , and is therefore also classifiable as a prion disease . Several yeast proteins have been identified as having prionogenic properties as well . A protein as a standalone infectious agent stands in contrast to all other known infectious agents such as viruses , bacteria , fungi , and parasites , all of which contain nucleic acids ( DNA , RNA , or both ) . For this reason , a minority of researchers still consider the prion / TSE hypothesis unproven . All known prion diseases in mammals affect the structure of the brain or other neural tissue ; all are currently untreatable and universally fatal . Prions may propagate by transmitting their misfolded protein state : When a prion enters a healthy organism , it induces existing , properly folded proteins to convert into the misfolded prion form . In this way , the prion acts... - Pathology (from the Greek roots of "pathos", meaning "experience" or "suffering", and "-logia", "study of") is a significant component of the causal study of disease and a major field in modern medicine and diagnosis. - A disease is a particular abnormal condition, a disorder of a structure or function, that affects part or all of an organism. The study of disease is called pathology which includes the causal study of etiology. Disease is often construed as a medical condition associated with specific symptoms and signs. It may be caused by external factors such as pathogens, or it may be caused by internal dysfunctions particularly of the immune system such as an immunodeficiency, or a hypersensitivity including allergies and autoimmunity. What is the relationship between 'prion' and 'infectious disease'????
output answer:
medical specialty