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

Q: Sentence: 'a line of portable toilets stands outdoors under trees'. How many words contain the letter 'l' in the sentence.

A: 3
****
Q: Sentence: 'a man and a woman stand under an umbrella'. How many words contain the letter 's' in the sentence.

A: 1
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Q: Sentence: 'a toy stuffed sheep next to a teddy bear'. How many words contain the letter 'u' in the sentence.

A:
1
****