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

Sentence: 'a modern looking bathroom has a toilet and a sink'. How many words contain the letter 'o' in the sentence.
4

Sentence: 'a pair of zebras looking towards the camera in a barren field'. How many words contain the letter 'u' in the sentence.
0

Sentence: 'baseball players on the field playing a game'. How many words contain the letter 'n' in the sentence.

2