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

[EX Q]: Sentence: 'a woman in a wheelchair is about to play tennis'. How many words contain the letter 'r' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'adult men playing with flying disc at popular beach'. How many words contain the letter 'o' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'this is a black and white night scene of a city in the rain'. How many words contain the letter 'o' in the sentence.
[EX A]:
1