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

[Q]: Sentence: 'four white and blue street signs on a wooden pole'. How many words contain the letter 'u' in the sentence.
[A]: 2


[Q]: Sentence: 'a man sleeping on a park bench then a woman looks at another man with a newspaper over his face on another park bench'. How many words contain the letter 't' in the sentence.
[A]: 5


[Q]: Sentence: 'a boy is standing in skies in the snow'. How many words contain the letter 'k' in the sentence.
[A]:
1