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 rocket flew up into the sky because it had to be
not plausible

the guests of the party hid behind the couch because it was a surprise party
plausible

the child became immune to the disease because it was necessary

not plausible