Does the sentence "At the start of the Opium War, China had no unified navy and no sense of how vulnerable she was to attack from the sea; British forces sailed and steamed wherever they wanted to go......" provide a valid answer to the question "What was the main problem the Qing had in preventing invasion from Europe?"

A: no

Does the sentence "In Gaul and Germany itself, with the possible exception of Trier and Cologne, the archeological evidence suggests at most a fleeting presence of very few Jews, primarily itinerant traders or artisans." provide a valid answer to the question "During the Middle Ages, some Jews assimilated into the dominant Greek and Latin cultures by doing what?"

A: no

Does the sentence "The electromagnetic field obeys laws of motion similarly to a mass on a spring, and can come to thermal equilibrium with hot atoms." provide a valid answer to the question "What scientist first studied black body radiation?"

A: no

Does the sentence "Since Madonna had the same name as her mother, family members called her "Little Nonni"." provide a valid answer to the question "What was Madonna's nickname when she was younger?"

A:
yes