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

Example Input: Sentence: 'a woman smiling for the camera while on a boat'. How many words contain the letter 'e' in the sentence.
Example Output: 3

Example 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.
Example Output: 1

Example Input: Sentence: 'man on ocean beach flying several kites on windy day'. How many words contain the letter 'm' in the sentence.
Example Output:
1