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

[EX Q]: Sentence: 'a black and white photo of a large clock on a building'. How many words contain the letter 't' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a man sits on a bench with a dog in lap reading'. How many words contain the letter 'x' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a young girl in a multicolored outfit aims at a tennis ball with her racquet'. How many words contain the letter 'r' in the sentence.
[EX A]:
4