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

[EX Q]: Sentence: 'a motorcycle parked in front of a small cafe'. How many words contain the letter 'n' in the sentence.
[EX A]: 2

[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: 'the man is stretching his arms up in the doorway'. How many words contain the letter 'm' in the sentence.
[EX A]:
2