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

Sentence: 'a close up of a street sign that is not in english'. How many words contain the letter 'p' in the sentence.
1

Sentence: 'a boy is doing a trick with his skateboard'. How many words contain the letter 'y' in the sentence.
1

Sentence: 'a steam cruise ship with a flag on top while in the water'. How many words contain the letter 'u' in the sentence.

1