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

[Q]: Sentence: 'a picture of some horses and a person in the street'. How many words contain the letter 'r' in the sentence.
[A]: 4


[Q]: Sentence: 'a beautiful woman playing with a small green bird'. How many words contain the letter 't' in the sentence.
[A]: 2


[Q]: Sentence: 'a woman in gray jacket standing on skis next to a child in a blue snowsuit'. How many words contain the letter 'f' in the sentence.
[A]:
0