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: 'a train that is pulling into the station'. How many words contain the letter 't' in the sentence.
answer:
5


question:
Sentence: 'an empty brown bench standing in a field next to a wooded area'. How many words contain the letter 'r' in the sentence.
answer:

2