QUES: City transportation in Strasbourg includes the futurist-looking Strasbourg tramway that opened in 1994 and is operated by the regional transit company Compagnie des Transports Strasbourgeois (CTS), consisting of 6 lines with a total length of 55.8 km (34.7 mi). The CTS also operates a comprehensive bus network throughout the city that is integrated with the trams. With more than 500 km (311 mi) of bicycle paths, biking in the city is convenient and the CTS operates a cheap bike-sharing scheme named Vélhop'. The CTS, and its predecessors, also operated a previous generation of tram system between 1878 and 1960, complemented by trolleybus routes between 1939 and 1962.

How long were the trolleybus routes?
What is the answer?
ANS: unanswerable
QUES: The Authorization for Use of Military Force Against Terrorists or "AUMF" was made law on 14 September 2001, to authorize the use of United States Armed Forces against those responsible for the attacks on 11 September 2001. It authorized the President to use all necessary and appropriate force against those nations, organizations, or persons he determines planned, authorized, committed, or aided the terrorist attacks that occurred on 11 September 2001, or harbored such organizations or persons, in order to prevent any future acts of international terrorism against the United States by such nations, organizations or persons. Congress declares this is intended to constitute specific statutory authorization within the meaning of section 5(b) of the War Powers Resolution of 1973.

What was made law on 11 September 2001?
What is the answer?
ANS: unanswerable
QUES: Works published since 1857 have received alternative catalogue designations instead of opus numbers. The present standard musicological reference for Chopin's works is the Kobylańska Catalogue (usually represented by the initials 'KK'), named for its compiler, the Polish musicologist Krystyna Kobylańska.

What is the current musicologist reference for Chopin's pieces?
What is the answer?
ANS:
the Kobylańska Catalogue