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 bathroom with a toilet with a blue seat'. How many words start with the letter 'b' in the sentence.
2

Sentence: 'a brown and white cat laying on blanket on door of open oven'. How many words start with the letter 'o' in the sentence.
5

Sentence: 'a man stands and holds a brown teddy bear'. How many words start with the letter 't' in the sentence.

1