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: 'a black and white cat is sitting on the bathroom sink'. How many words start with the letter 'i' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'two people walking on a side walk with an umbrella'. How many words start with the letter 'w' in the sentence.

SOLUTION:
3