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.

Q: Sentence: 'a man touching a bird on top of a cage'. How many words start with the letter 'a' in the sentence.

A: 3
****
Q: Sentence: 'a man cuts into food being cooked on a grill'. How many words start with the letter 'o' in the sentence.

A: 1
****
Q: Sentence: 'a close up of a traffic light on a city street'. How many words start with the letter 'a' in the sentence.

A:
3
****