TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a man walking in front of a train station'. How many words contain the letter 'o' in the sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a woman swinging a tennis racquet in the air'. How many words contain the letter 'z' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'three men sitting at a table that has three pizzas on it'. How many words contain the letter 'a' in the sentence.

SOLUTION:
6