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 skateboarding down a rail next to a building'. How many words start with the letter 'a' in the sentence.

SOLUTION: 3

PROBLEM: Sentence: 'five giraffes meandering along in their outdoor habitat'. How many words start with the letter 'f' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'a dude holding a frisbee stands on a concrete foundation'. How many words start with the letter 'a' in the sentence.

SOLUTION:
3