In this task, you need to count the number of words in a sentence that contain the given letter

[Q]: Sentence: 'bus parked next to a side walk on the road'. How many words contain the letter 'd' in the sentence.
[A]: 3

[Q]: Sentence: 'trash cans and a fire hydrant are on the curb of a sidewalk'. How many words contain the letter 'u' in the sentence.
[A]: 1

[Q]: Sentence: 'antique military plane sits on beach near open waters'. How many words contain the letter 'f' in the sentence.
[A]:
0