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

[EX Q]: Sentence: 'a view from a plane window near a large snowy peak'. How many words contain the letter 'u' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a bunch of white hyacinths arranged in a vase'. How many words contain the letter 'r' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a man with a suit and helmet leans on his motorcycle'. How many words contain the letter 'b' in the sentence.
[EX A]:
0