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

Ex Input:
Sentence: 'an image of a person holding a blunt object is rendered in red and blue tones'. How many words contain the letter 'x' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a man in a blue shirt and ear piece holds a clip board'. How many words contain the letter 'u' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'two double decker buses at the curb at a bus stop'. How many words contain the letter 'g' in the sentence.

Ex Output:

0