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

[EX Q]: Sentence: 'black and white photograph of a man using a cell phone on the street'. How many words contain the letter 'r' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'an over head view of people walking in a cramped area'. How many words contain the letter 'q' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a larger passenger jet flying through a blue sky'. How many words contain the letter 'a' in the sentence.
[EX A]:
4