In this task, you will be given two sentences separated by "because". You should decide whether the first sentence can be the result of the second sentence. If you can see a possible cause and effect relationship, answer with "plausible", otherwise answer with "not plausible".

the man closed the book because he was exhausted
plausible

the friends' debate dragged on interminably because there were so few of them
not plausible

the boat capsized because the captain raised the sail

plausible