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

[EX Q]: Sentence: 'a tennis player holds a ball as if to throw it in the air to serve it'. How many words contain the letter 'o' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'child standing in front of a stop sign on a suburban street corner'. How many words contain the letter 'u' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a living room area with air filled balloons all over the floor and a television on'. How many words contain the letter 'q' in the sentence.
[EX A]:
0