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

Input: Consider Input: Sentence: 'a group of giraffes walk across an open area'. How many words contain the letter 'm' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a large brown dog with a white deflated ball in its mouth'. How many words contain the letter 'm' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a woman bent down on the street holding her umbrella'. How many words contain the letter 'x' in the sentence.


Output: 0