Does the sentence "This is for sub-standard work, which is sometimes torn at the top of the page/sheet and must be submitted to the boy's housemaster for signature." provide a valid answer to the question "What is the opposite of a Show Up?"

A: no

Does the sentence "The sport was invented in the early 1980s and patented by Foster, a former executive of the United States Football League and the National Football League." provide a valid answer to the question "Who was the founder of the Arena Football League?"

A: no

Does the sentence "Later American English spellings, neger and neggar, prevailed in a northern colony, New York under the Dutch, and in metropolitan Philadelphia's Moravian and Pennsylvania Dutch communities; the African Burial Ground in New York City originally was known by the Dutch name "Begraafplaats van de Neger"" provide a valid answer to the question "Where were slaves shipped to from West Africa?"

A: no

Does the sentence "However, Jef Raskin had adopted the Macintosh spelling by 1981, when the Macintosh computer was still a single prototype machine in the lab." provide a valid answer to the question "What was Jef Raskin's profession?"

A:
no