question: What was the reason for the name `` Ironbottom Sound '' of the water stretches new Guadalcanal ?
answer: the multitude of ships sunk
turker_answer: The reason for the name `` Ironbottom Sound '' for the water stretches in new Guadalcanal was the multitude of ships sunk .
rule-based: The reason for the name `` Ironbottom Sound '' of the water was stretches the multitude of ships sunk new Guadalcanal .