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

Sentence: 'a woman poses with a large teddy bear'. How many words contain the letter 'u' in the sentence.
0

Sentence: 'a white cat sitting on a couch in a den'. How many words contain the letter 'l' in the sentence.
0

Sentence: 'a black and white dog sleeps in front of a blue door'. How many words contain the letter 'w' in the sentence.

1