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: 'person surfing in the sea on the surfboard'. How many words start with the letter 's' in the sentence.
3

Sentence: 'a traffic light with a red light and an arrow pointing to the right'. How many words start with the letter 't' in the sentence.
3

Sentence: 'a dog is laying down on a small couch'. How many words start with the letter 'a' in the sentence.

2