Does the sentence "The level of activity in the brain of neurotransmitters such as dopamine and norepinephrine may be the reason for this." provide a valid answer to the question "Such chemicals do what to the firing of the brain's neurons?"

A: no

Does the sentence "The trustees of Columbia University refused to accept Eisenhower's resignation in December 1950, when he took an extended leave from the university to become the Supreme Commander of the North Atlantic Treaty Organization (NATO), and he was given operational command of NATO forces in Europe." provide a valid answer to the question "On what date did Eisenhower leave active duty in the military?"

A: no

Does the sentence "The second electrode is a liquid electrolyte, connected to the circuit by another foil plate." provide a valid answer to the question "What type of dielectric layer is used in electrolytic capacitors?"

A: no

Does the sentence "Thuringia became a landgraviate in 1130 AD." provide a valid answer to the question "When did Thuringia become a landgraviate?"

A:
yes