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

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

Sentence: 'a apple that is sitting on top of a knife'. How many words contain the letter 'u' in the sentence.
0

Sentence: 'a lady and a small kid by a big cute cow'. How many words contain the letter 'n' in the sentence.

1