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

Input: Consider Input: Sentence: 'there is a plate if food with broccoli fish and a baked potato'. How many words contain the letter 'k' in the sentence.

Output: 1

Input: Consider Input: Sentence: 'a bench is in the ocean water with a fishing pole'. How many words contain the letter 'm' in the sentence.

Output: 0

Input: Consider Input: Sentence: 'two giraffes walk side by side in a enclosed area'. How many words contain the letter 'e' in the sentence.
Output: 5