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

Sentence: 'a line of very tall buildings next to a clock tower'. How many words contain the letter 'o' in the sentence.
4

Sentence: 'a street scene with cars and an city bus'. How many words contain the letter 's' in the sentence.
4

Sentence: 'the man is standing on a surfboard with a paddle'. How many words contain the letter 'u' in the sentence.

1