TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a zebra is standing in the shallow water'. How many words contain the letter 't' in the sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a man that is sitting on a horse in the grass'. How many words contain the letter 'y' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'a toilet sitting outside by a wall'. How many words contain the letter 'l' in the sentence.

SOLUTION:
2