instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a man with a skateboard up in air at a skateboard park'. How many words contain the letter 's' in the sentence.
answer:
2


question:
Sentence: 'a man in a helmet leans on his motorcycle'. How many words contain the letter 'n' in the sentence.
answer:
4


question:
Sentence: 'a laptop computer that is sitting on a desk'. How many words contain the letter 't' in the sentence.
answer:

4