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

[Q]: Sentence: 'a skier posing for a photo in front of a slope'. How many words contain the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'the street corner is flooded deep with water'. How many words contain the letter 'f' in the sentence.
[A]: 1


[Q]: Sentence: 'they both cut the wedding cake together at the ceremony'. How many words contain the letter 'o' in the sentence.
[A]:
3