instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'several people and a dog riding on a small boat'. How many words contain the letter 'l' in the sentence.
answer:
3


question:
Sentence: 'five kids playing with frisbees on a sunny day'. How many words contain the letter 'p' in the sentence.
answer:
1


question:
Sentence: 'a hand is sitting on a mouse next to a laptop'. How many words contain the letter 'u' in the sentence.
answer:

1