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 police car driving by a construction truck'. How many words start with the letter 'b' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'a man riding a skateboard at a skate park'. How many words start with the letter 'r' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'a smiling man stands behind a stroller with a small child in it'. How many words start with the letter 's' in the sentence.

SOLUTION:
4