TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'several people and a dog riding on a small boat'. How many words contain the letter 'l' in the sentence.

SOLUTION: 3

PROBLEM: Sentence: 'the train needs to be serviced so it is o the truck'. How many words contain the letter 'n' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a man kneeling down next to two large dogs'. How many words contain the letter 't' in the sentence.

SOLUTION:
3