TASK DEFINITION: In this task, you need to count the number of words in a sentence that start with the given letter. Answer with numbers and not words.
PROBLEM: Sentence: 'a man sitting at a cafeteria table with his laptop and looking at his cell phone'. How many words start with the letter 'h' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'several people watch cars drive by with bikes on them'. How many words start with the letter 'b' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a man sits on a couch and eats a sub sandwich'. How many words start with the letter 'a' in the sentence.

SOLUTION:
4