Q: Does "Similar to striations are chatter marks, lines of crescent-shape depressions in the rock underlying a glacier." provide a valid answer to "What can scientists deduct from the direction of the striations?"?
A: no

Q: Does "The design and production of a light source or light fixture using a monochrome emitter with phosphor conversion is simpler and cheaper than a complex RGB system, and the majority of high-intensity white LEDs presently on the market are manufactured using phosphor light conversion." provide a valid answer to "What is the most popular method for making high-intensity white LEDs?"?
A: no

Q: Does "Evidence of human habitation in the Alps goes back to the Paleolithic era." provide a valid answer to "Evidence of human habitation in the Alps goes as far back to what era?"?
A: yes

Q: Does "On June 12, 1990, the Congress of People's Deputies adopted the Declaration of State Sovereignty." provide a valid answer to "Who became president on June 12, 1991?"?
A:
no