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 group of people sitting at a long table in  a wine cellar'. How many words start with the letter 'a' in the sentence.

SOLUTION: 4

PROBLEM: Sentence: 'a man without a shirt riding a skateboard'. How many words start with the letter 'r' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'a zebra is running toward a shady area under the trees'. How many words start with the letter 'a' in the sentence.

SOLUTION:
3