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: .To dispel rumors: US aircraft flying IAW ICAO flight rules in intl airspace was intercepted by Russian fighter in unsafe manner April 7.1/2 U.S European Command (@US_EUCOM) April 11, 2015 Answer: russian fighter
who intercepted the iaw icao?

Context: Supporting a @Marvel fan's cancer fight, stars inc @clarkgregg participate in #CapForStrat 8 Clark Gregg Reporter (@TheCGReporter) May 15, 2014 Answer: capforstrat
what are they participating in?

Context: On a day like today, we're especially grateful to have Trevor Noah on #LSSC to help put things into perspective. #LSSC@ The Late Show (@colbertlateshow) June 15, 2017 Answer: trevor noah
who are they grateful to have on lssc?