Problem: Does "many of the early hits were based on sample montage, rap was often used for vocals (far more than in the US),[citation needed] and humor was frequently an important element." answer the question "what was the name of MARRS' number-one single in October 1987?" OPTIONS:
- yes
- no

A: no

Problem: Does "The status of the southernmost Kurils remains in dispute with Japan." answer the question "What administrative division did Sakhalin Island become a part of?" OPTIONS:
- yes
- no

A: no

Problem: Does "Many railways chose low AC frequencies to overcome these problems." answer the question "What problems did AC distribution cause?" OPTIONS:
- yes
- no

A:
no