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

Sentence: 'a bird is standing on the edge of a book'. How many words contain the letter 'o' in the sentence.
3

Sentence: 'a close up of two black cows grazing the grass'. How many words contain the letter 'u' in the sentence.
1

Sentence: 'a man and woman standing together on a stage'. How many words contain the letter 'w' in the sentence.

1