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 student flaunted his test grade to his classmates because he did not know how to do the homework
not plausible

the woman hummed to herself because she had died
not plausible

the rocket flew up into the sky because she was pregnant

not plausible