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

Input: Consider Input: Sentence: 'a glass vase with clear glass marbles in it and purple flowers coming out of the vase'. How many words contain the letter 'd' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a zebra is standing in the shallow water'. How many words contain the letter 't' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a person on a surfboard in the water'. How many words contain the letter 'i' in the sentence.


Output: 1