For this chain-of-thought reasoning and answer, what was the question?
Isle is an island or peninsula, especially a small one. If you sail all seven of them you might come across an isle or two, but the one with the treasure is in just a single sea.
 A: sea
Q: If you sale all seven of them you might come across an isle or two, but the one with the treasure is in just a single what?
Options:
- sea
- river
- ocean
- body of water
- auditorium