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: 'some black birds sitting on some rocks and some water'. How many words start with the letter 'b' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'a plane parked on the cement in front of trees'. How many words start with the letter 'i' in the sentence.

SOLUTION:
1