question: Why is the Bermuda Triangle an area of interest ?
answer: a number of aircraft and surface vessels have disappeared under supposedly unexplained or mysterious circumstances .
turker_answer: The Bermuda Triangle an area of interest because a number of aircraft and surface vessels have disappeared under supposedly unexplained or mysterious circumstances .
rule-based: The Bermuda Triangle an area of interest is because a number of aircraft and surface vessels have disappeared under supposedly unexplained or mysterious circumstances .