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

Input: Consider Input: Sentence: 'a man walking with rolling luggage and many bags'. How many words contain the letter 'g' in the sentence.

Output: 4

Input: Consider Input: Sentence: 'a group of people on skis on a snowy slope'. How many words contain the letter 'w' in the sentence.

Output: 1

Input: Consider Input: Sentence: 'an elephant eats grass in the savanna near a jungle'. How many words contain the letter 'k' in the sentence.
Output: 0