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

[Q]: Sentence: 'three birds perched on top of a wire fence'. How many words contain the letter 'b' in the sentence.
[A]: 1


[Q]: Sentence: 'a couple sitting on seats on a train'. How many words contain the letter 'z' in the sentence.
[A]: 0


[Q]: Sentence: 'a man stepping from a dock onto a coast guard boat'. How many words contain the letter 'h' in the sentence.
[A]:
0