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

Ex Input:
Sentence: 'some soldiers cutting into a big sheet cake on a table'. How many words contain the letter 'c' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a basket that is full of fruits and vegetables'. How many words contain the letter 'v' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'two small dogs facing each other playing in the grass'. How many words contain the letter 'c' in the sentence.

Ex Output:

2