TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a young person flying through the air while riding a skateboard'. How many words contain the letter 'd' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a man is sitting in a cubicle with a computer'. How many words contain the letter 'a' in the sentence.

SOLUTION: 4

PROBLEM: Sentence: 'a herd of animals walking across a snow covered field'. How many words contain the letter 'd' in the sentence.

SOLUTION:
3