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: 'a man riding skis down the side of a snow covered ski slope'. How many words start with the letter 's' in the sentence.
5

Sentence: 'a terrier in a black and light brown far next to each other'. How many words start with the letter 'b' in the sentence.
2

Sentence: 'assortment of food items on red plate with large knife'. How many words start with the letter 'p' in the sentence.

1