In this task, you are given a context tweet and an answer. Your job is to generate a question for the given answer based on the given tweet paragraph. Note that your question should be answerable based on the given tweet, and the answer to your question should be the given answer.

Context: 2 of the last living WW2 AVG #FlyingTigers Frank Losonsky (left) & Chuck Baisden reunite with a P-40E Warhawk for #AWW16 #avgeek #milav Thom Patterson (@thompatterson) September 22, 2016 Answer: frank losonsky and chuck baisden
who are the two of the last living ww2 avg?

Context: Rocket made it to drone spaceport ship, but landed hard. Close, but no cigar this time. Bodes well for the future tho.— Elon Musk (@elonmusk) January 10, 2015 Answer: hard.
how did rocket land at the spaceport ship?

Context: @kristen We're disappointed to hear this and would like to follow up with our Inflight team. Please DM your confirmation number. Thanks. ^EY— United (@united) March 10, 2015 Answer: kristen

who had a problem with united airlines?