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: 'there is a bird standing on a rocky shore'. How many words start with the letter 'a' in the sentence.
2

Sentence: 'a rusty metal park bench in a park'. How many words start with the letter 'a' in the sentence.
2

Sentence: 'two slices of pizza on a paper plate'. How many words start with the letter 'o' in the sentence.

2