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

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

[EX Q]: Sentence: 'a little girl sitting on the floor reading a book'. How many words contain the letter 'n' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'there is a double parking meter on the side of the road'. How many words contain the letter 'h' in the sentence.
[EX A]:
3