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

[EX Q]: Sentence: 'several people sitting around a table eating pizza'. How many words contain the letter 'u' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a sidewalk with a toilet laying on side with people in background'. How many words contain the letter 'o' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'a dog laying in a bed being covered by sheets'. How many words contain the letter 'r' in the sentence.
[EX A]:
1