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

Ex Input:
Sentence: 'a woman surfer is on an ocean wave'. How many words contain the letter 's' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'multiple birds on the ground in a parking lot'. How many words contain the letter 'm' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a young female holding a tennis racket in a tennis court'. How many words contain the letter 'o' in the sentence.

Ex Output:

3