instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a man srufing the waves on a board in front of 3 tall pillars'. How many words contain the letter 'n' in the sentence.
answer:
5

question:
Sentence: 'a man in mid swing of a baseball bat'. How many words contain the letter 'k' in the sentence.
answer:
0

question:
Sentence: 'a child on a toy is approaching a fire hydrant'. How many words contain the letter 'v' in the sentence.
answer:
0