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 giraffe is standing behind a stone wall'. How many words start with the letter 'a' in the sentence.
2

Sentence: 'woman standing on the beach with a large sailboat behind her'. How many words start with the letter 's' in the sentence.
2

Sentence: 'a group of boats floating in the ocean next to a dirty walkway'. How many words start with the letter 't' in the sentence.

2