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 little boy sitting at a table with a spoon full of food'. How many words start with the letter 's' in the sentence.
2

Sentence: 'a man in vest and tie holding a cellphone'. How many words start with the letter 'a' in the sentence.
3

Sentence: 'there is a red couch in a room in the sunlight'. How many words start with the letter 'r' in the sentence.

2