Q: Does "Regular passenger service resumed in the 1920s and the discovery of helium reserves in the United States promised increased safety, but the U.S. government refused to sell the gas for this purpose." provide a valid answer to "Who made the first non stop transatlantic crossing?"?
A: no

Q: Does "The 1977 flag of Libya consisted of a simple green field with no other characteristics." provide a valid answer to "Which country had a flag in 1977 that was only green?"?
A: yes

Q: Does "The FIBA Africa Championship 1981 was hosted by Somalia from 1523 December 1981." provide a valid answer to "When did the 1981 FIBA African Championship take place?"?
A: yes

Q: Does "The entire lake bed is now paved over and most of the city's remaining forested areas lie in the southern boroughs of Milpa Alta, Tlalpan and Xochimilco." provide a valid answer to "Where are most of the trees located in Mexico City?"?
A:
yes