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

Ex Input:
Sentence: 'a horse and a donkey stand in a fenced field'. How many words contain the letter 'd' in the sentence.

Ex Output:
5


Ex Input:
Sentence: 'a man walking with rolling luggage and many bags'. How many words contain the letter 'g' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a giraffe and its baby are running through the field'. How many words contain the letter 'q' in the sentence.

Ex Output:

0