TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'ther e is a commuter train that is coming on the tracks'. How many words contain the letter 'r' in the sentence.

SOLUTION: 4

PROBLEM: Sentence: 'a counter top that has many pots and ingredients on it'. How many words contain the letter 'b' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'the room is loaded with exceptional things appropriate'. How many words contain the letter 'e' in the sentence.

SOLUTION:
4