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

Ex Input:
Sentence: 'a fire hydrant on the side of the road near a building'. How many words contain the letter 'a' in the sentence.

Ex Output:
5


Ex Input:
Sentence: 'a close up of two people wearing ties'. How many words contain the letter 'o' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a green blue and red fire extinguisher beside a road'. How many words contain the letter 't' in the sentence.

Ex Output:

1