Does the sentence "London was the world's largest city from about 1831 to 1925." provide a valid answer to the question "How many people died of cholera in London in 1848?"

A: no

Does the sentence "They spent what Mendelssohn described as "a very agreeable day", playing and discussing music at his piano, and met Friedrich Wilhelm Schadow, director of the Academy of Art, and some of his eminent pupils such as Lessing, Bendemann, Hildebrandt and Sohn." provide a valid answer to the question "What was Friedrich Wilhelm Schadow position?"

A: yes

Does the sentence "On February 7, 1987, dozens of political prisoners were freed in the first group release since Khrushchev's "thaw" in the mid-1950s." provide a valid answer to the question "Who released the prisoners in the 1950s?"

A: yes

Does the sentence "From 1940, the Sovereign could appoint a person as a Commander, Officer or Member of the Order of the British Empire for gallantry for acts of bravery (not in the face of the enemy) below the level required for the George Medal." provide a valid answer to the question "From what year could the Sovereign appoint a person as Commander, Officer or Member of the Order of the British Empire?"

A:
yes