Question: A waltz, is dance music in triple meter, often written in time, probably deriving from which German word, and is a folk dance in time which was popular in Austria, south Germany, German Switzerland, and Slovenia at the end of the 18th century?

Context paragraphs:
Goetta: Goetta is a meat-and-grain sausage or mush of German inspiration that is popular in the greater Cincinnati area.  It is primarily composed of ground meat (pork, or pork and beef), pin-head oats and spices.  Pronounced "gétt-aa", "ged-da" or "get-uh" in Americanized pronunciation, and gutta in the Low German pronunciation, this dish probably originated with German settlers from the northwestern regions of Oldenburg, Hannover, and Westphalia who emigrated to the Cincinnati and Dayton area in the 19th century.  The word "Goetta" comes from the Low German word "Grötte."  North of Cincinnati, specifically in the region surrounding Darke, Mercer, Shelby, and Auglaize counties, goetta is often known by the term "grits", not to be confused with hominy grits.  This usage of the word "grits" stems from the High German word "Grütze," which is an equivalent of the Low German "Grötte."

Pandanggo: Pandanggo is a Philippine folk dance which has become popular in the rural areas of the Philippines.  The dance evolved from Fandango, a Spanish folk dance, which arrived in the Philippines during the Hispanic period.  This dance, together with the Jota, became popular among the "illustrados" or the upper class and later adapted among the local communities.  In the early 18th century, any dance that is considered jovial and lively was called Pandanggo.

Contra dance: Contra dance (also contradance, contra-dance and other variant spellings) is a folk dance made up of long lines of couples.  It has mixed origins from English country dance, Scottish, French dance styles in the 17th century.  Sometimes described as New England folk dance or Appalachian folk dance, contra dances can be found around the world and have much popularity in North America and the United Kingdom where weekly or monthly dances and annual dance weekends are common.  According to the Contra Dance Links website, contra dancing can be found in all US states except for South Dakota.

Mazurka: The mazurka (in Polish mazurek, plural "mazurki") is a Polish folk dance in triple meter, usually at a lively tempo, and with "strong accents unsystematically placed on the second or third beat".

Waltz (music): A waltz (German: "Walzer"; French: "Valse", Italian: "Valzer", Spanish: "Vals", Polish: "Walc"), probably deriving from German "Ländler", is dance music in triple meter, often written in  time.  A waltz typically sounds one chord per measure, and the accompaniment style particularly associated with the waltz is (as seen in the example to the right) to play the root of the chord on the first beat, the upper notes on the second and third beats.

Saltarello: The saltarello is a musical dance form originally from Italy.  The first mention of it is in Add MS 29987, a fourteenth-century manuscript probably of Tuscan origin, now in the British Library.  It was played in a fast triple meter and is named for its peculiar leaping step, after the Italian verb "saltare" ("to jump").  This characteristic is also the basis of the German name "Hoppertanz" or "Hupfertanz" ("hopping dance"); other names include the French "pas de Brabant" and the Spanish "alta" or "alta danza".

Septuple meter: Septuple meter (British: metre) or (chiefly British) septuple time is a meter with each bar (American: measure) divided into 7 notes of equal duration, usually or (or in compound meter, time).  The stress pattern can be 2+2+3, 3+2+2, or occasionally 2+3+2, although a survey of certain forms of mostly American popular music suggests that 2+2+3 is the most common among these three in these styles.  A time signature of , however, does not necessarily mean that the bar is a compound septuple meter with seven beats, each divided into three.  This signature may, for example, be used to indicate a bar of triple meter in which each beat is subdivided into seven parts.  In this case, the meter is sometimes characterized as "triple septuple time".  It is also possible for a time signature to be used for an irregular, or "additive" metrical pattern, such as groupings of 3 + 3 + 3 + 2 + 3 + 2 + 3 + 2 eighth notes.  Septuple meter can also be notated by using regularly "alternating" bars of triple and duple or quadruple meters, for example + , or + + , or through the use of "compound meters", in which two or three numerals take the place of the expected numerator 7, for example, , or .

Polka: The polka is originally a Czech dance and genre of dance music familiar throughout Europe and the Americas.  It originated in the middle of the 19th century in Bohemia, now part of the Czech Republic.  Polka remains a popular folk music genre in many European countries, and is performed by folk artists in the Czech Republic, Germany, Austria, Poland, Croatia, Slovenia, Switzerland, and to a lesser extent in Latvia, Lithuania, the Netherlands, Hungary, Italy, Ukraine, Romania, Belarus, Russia, and Slovakia.  Local varieties of this dance are also found in the Nordic countries, the United Kingdom, Ireland, Latin America and the United States.

Ländler: The Ländler (] ) is a folk dance in  time which was popular in Austria, south Germany, German Switzerland, and Slovenia at the end of the 18th century.

Mazurka (disambiguation): Mazurka is a Polish folk dance in triple meter.

Supporting paragraphs: Waltz (music) Ländler
Answer: Ländler