instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a clothing line with teddy bears hung by their ears'. How many words contain the letter 'n' in the sentence.
answer:
3


question:
Sentence: 'the bathroom has a shower toilet toilet paper and a sink with leaves in it'. How many words contain the letter 'v' in the sentence.
answer:
1


question:
Sentence: 'a man who is on a surfboard riding a wave'. How many words contain the letter 'n' in the sentence.
answer:

3