In this task, you need to count the number of words in a sentence that contain the given letter
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Question: Sentence: 'a smiling man holds out a card with color swatches'. How many words contain the letter 'i' in the sentence.

Answer: 2

Question: Sentence: 'child standing in front of a stop sign on a suburban street corner'. How many words contain the letter 'u' in the sentence.

Answer: 1

Question: Sentence: 'the room has all different kinds of blue decor'. How many words contain the letter 'n' in the sentence.

Answer:
2