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

Input: Consider Input: Sentence: 'a large zebra standing out in a grassy field'. How many words contain the letter 'e' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a mother and son holding wii controls in front of a christmas fireplace'. How many words contain the letter 'x' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a group of gazelles near some zebras grazing in a field'. How many words contain the letter 'm' in the sentence.


Output: 1