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".

Q: the inside of the train went dark because the light was off

A: plausible
****
Q: the woman gave the man her phone number because she was worried about him

A: plausible
****
Q: the woman hummed to herself because she knew the truth

A:
plausible
****