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: 'three groups of yellow flowers in vases on table'. How many words start with the letter 't' in the sentence.
2

Sentence: 'a man eating a giant slice of pizza over a table'. How many words start with the letter 'o' in the sentence.
2

Sentence: 'a person riding a skateboard down a street'. How many words start with the letter 'a' in the sentence.

3