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

Ex Input:
Sentence: 'a girl laying on a couch with a bird on her head'. How many words contain the letter 'v' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a woman working her small shared office cubicle'. How many words contain the letter 'g' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a wall shelf with a vase and picture frames'. How many words contain the letter 'i' in the sentence.

Ex Output:

2