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.
--------
Question: Sentence: 'while in a restaurant a young man is playing with his phone'. How many words start with the letter 'w' in the sentence.

Answer: 2

Question: Sentence: 'a close up of a baby with a tooth brush'. How many words start with the letter 'a' in the sentence.

Answer: 3

Question: Sentence: 'a donut with captain crunch cereal on it and a cup of coffee'. How many words start with the letter 'c' in the sentence.

Answer:
5