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

[Q]: Sentence: 'a group of people on skis on a snowy slope'. How many words contain the letter 'w' in the sentence.
[A]: 1

[Q]: Sentence: 'two giraffes with their heads in the tree'. How many words contain the letter 'o' in the sentence.
[A]: 1

[Q]: Sentence: 'a woman taking a photo of herself in the mirror'. How many words contain the letter 'l' in the sentence.
[A]:
1