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 picture of a mirror on a bike'. How many words start with the letter 'o' in the sentence.

SOLUTION: 2

PROBLEM: Sentence: 'man in winter clothes riding a snowboard on a gentle slope'. How many words start with the letter 'g' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'a surfer a woman and a child walk on the beach'. How many words start with the letter 'a' in the sentence.

SOLUTION:
4