Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Egypt has launched its own inquiry into whether a bomb may have been placed on the Russian airliner that crashed in Sinai, killing all 224 people on board.

Russia plane crash: Egypt launches inquiry into bomb claims