TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'people walking down the sidewalk with no turn signs'. How many words contain the letter 'e' in the sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a couple of people that are on some skateboards'. How many words contain the letter 'o' in the sentence.

SOLUTION: 6

PROBLEM: Sentence: 'a man on a snowboard jumps in the air'. How many words contain the letter 'j' in the sentence.

SOLUTION:
1