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".

I ironed my shirt because i was cold
not plausible

the boy climbed the tree because it was the only way to get to the top of the tree
plausible

I wrote a thank-you note to my grandmother because she couldn't help me

not plausible