Does the sentence ", there has been a move towards clear glass, in keeping with brighter interiors." provide a valid answer to the question "Why were the windows of town pubs made of smoked or frosted glass traditionally?"

A: no

Does the sentence "The PVA had outrun its logistics capability and thus were unable to press on beyond Seoul as food, ammunition, and materiel were carried nightly, on foot and bicycle, from the border at the Yalu River to the three battle lines." provide a valid answer to the question "Why was the PVA unable to advance beyond Seoul?"

A: yes

Does the sentence "Historians trace the earliest church labeled "Baptist" back to 1609 in Amsterdam, with English Separatist John Smyth as its pastor." provide a valid answer to the question "When was the earliest church labeled "Baptist" traced to?"

A: yes

Does the sentence "Other sources of pollution, including mercury contamination and sewage dumping, have also contributed to problems in the Hudson River watershed." provide a valid answer to the question "What other types of pollution have contaminated the Hudson River watershed?"

A:
yes