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

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

Output: 5


Input: Consider Input: Sentence: 'a large truck driving on a crowded street'. How many words contain the letter 'i' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a person riding skis down a snow covered slope'. How many words contain the letter 'y' in the sentence.


Output: 0