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

Ex Input:
Sentence: 'a white sand beach with chairs umbrellas and people'. How many words contain the letter 't' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'little girl with her bunny beside her sitting on a bench'. How many words contain the letter 'w' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a young girl who is sitting on a bed'. How many words contain the letter 'y' in the sentence.

Ex Output:

1