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 man riding on top of a wave on a surfboard'. How many words start with the letter 'o' in the sentence.
3

Sentence: 'a group of dogs standing next to each other while on leashes'. How many words start with the letter 'o' in the sentence.
3

Sentence: 'a painting of a man walking his dog sitting on a sidewalk'. How many words start with the letter 'o' in the sentence.

2

