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

[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: 'looking out a window at a tall building with a clock on the face'. How many words contain the letter 'l' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'a man in a striped shirt posing with a skateboard'. How many words contain the letter 'e' in the sentence.
[EX A]:
2