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: I was briefed this morning by CAL FIRE pilots about the dangers of drones while fighting wildfires. #SB167 Ted Gaines (@TedGaines) July 10, 2015 Answer: about the hazards of drones while fighting wildfires.
what was the brief about?

Context: Some serious history doing the rounds here in #Monaco #historicgramdprix Amanda Davies (@AmandaJDavies) May 9, 2014 Answer: a car race.
what is the grand prix?

Context: @russellcrowe ...reminder emails you will have received. We have also communicated this on Facebook and Twitter, as well as... 2/4— Virgin Australia (@VirginAustralia) December 29, 2015 Answer: russell crowe.

who is virgin australia trying to contact?