Q: Does "The US started an upgrade of their defences using the Nike Ajax missile, and soon the larger anti-aircraft guns disappeared." provide a valid answer to "The introduction of what caused the larger anti-aircraft guns to disappear in the USSR?"?
A: no

Q: Does "It is usually recommended that the beer be poured slowly, leaving any yeast sediment at the bottom of the bottle." provide a valid answer to "What type of bottle conditioned beer is customarily poured with the yeast in it?"?
A: no

Q: Does "The Earth contains about 434 billion cubic meters of growing stock forest, 47% of which is commercial." provide a valid answer to "How many cubic meters of growing stock forest are there on the planet?"?
A: yes

Q: Does "This led to the construction of the shopping mall Hoog Catharijne (nl), music centre Vredenburg (Hertzberger, 1979), and conversion of part of the ancient canal structure into a highway (Catherijnebaan)." provide a valid answer to "What mall was constructed"?
A:
yes