Does the sentence "Although the U.S. Environmental Protection Agency was established in 1970 and amendments to the pesticide law in 1972, pesticide use has increased 50-fold since 1950 and 2.3 million tonnes (2.5 million short tons) of industrial pesticides are now[when?]" provide a valid answer to the question "When did America establish the Environmental Protection Agency?"

A: yes

Does the sentence "The book was a Lutheran manuscript, which never reached the reader and was destroyed immediately after publication." provide a valid answer to the question "At what point in its existence was the Lutheran manuscript destroyed?"

A: yes

Does the sentence "Much of the scientific research in the city is done in medicine and the life sciences." provide a valid answer to the question "As of 2012, how many physicians were working in New York City?"

A: no

Does the sentence "A distinct Greek political identity re-emerged in the 11th century in educated circles and became more forceful after the fall of Constantinople to the Crusaders of the Fourth Crusade in 1204, so that when the empire was revived in 1261, it became in many ways a Greek national state." provide a valid answer to the question "What caused the resurface of the Grecian monotony in politics ?"

A:
yes