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

[Q]: Sentence: 'a sign reading butt street on the corner of a building with a no parking sign below it'. How many words contain the letter 'h' in the sentence.
[A]: 2


[Q]: Sentence: 'a person in uniform is on a motorcycle near other uniformed people'. How many words contain the letter 'r' in the sentence.
[A]: 6


[Q]: Sentence: 'a blurred picture with fireworks and smoke at the back'. How many words contain the letter 'r' in the sentence.
[A]:
3