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

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

Ex Output:
4

Ex Input:
Sentence: 'a tv showing a broadcast from the weather channel'. How many words contain the letter 'j' in the sentence.

Ex Output:
0

Ex Input:
Sentence: 'a car is at a red traffic light near a construction zone'. How many words contain the letter 'c' in the sentence.

Ex Output:
3