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.

Sentence: 'several boxes of glazed donuts on a desk'. How many words start with the letter 'o' in the sentence.
2

Sentence: 'a man eating a giant slice of pizza over a table'. How many words start with the letter 'o' in the sentence.
2

Sentence: 'two pizzas sitting on top of a pan on a counter'. How many words start with the letter 'p' in the sentence.

2