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

[Q]: Sentence: 'a sandwich shop with cars parked in front of it'. How many words contain the letter 'u' in the sentence.
[A]: 0


[Q]: Sentence: 'a man sits on a bench with a dog in lap reading'. How many words contain the letter 'x' in the sentence.
[A]: 0


[Q]: Sentence: 'blue flowers and orange berries on a plant'. How many words contain the letter 'f' in the sentence.
[A]:
1