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

[Q]: Sentence: 'a smiling man holds out a card with color swatches'. How many words contain the letter 'i' in the sentence.
[A]: 2


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


[Q]: Sentence: 'two children playing with a purple chair next to a sofa'. How many words contain the letter 'a' in the sentence.
[A]:
5