Does the sentence "This makes these aircraft an essential part of the Air Force's global mobility and the U.S. force projection." provide a valid answer to the question "What kind of aircraft is the USAF's KC-135?"

A: no

Does the sentence "Somali-owned businesses line the streets of Deira, the Dubai city centre, with only Iranians exporting more products from the city at large." provide a valid answer to the question "How many Dubai-based airlines are owned by Somalis?"

A: no

Does the sentence "In bacteria, an estimated 250400 genes are essential for Escherichia coli and Bacillus subtilis, which is less than 10% of their genes." provide a valid answer to the question "What fraction of Escherichia coli's essential genes are orthologs?"

A: no

Does the sentence "Occasionally he played, or accompanied the singing of Delfina Potocka, for his friends." provide a valid answer to the question "Chopin accompanied which singer for friends?"

A:
yes