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 young girl wearing a pink tie and glasses'. How many words start with the letter 'a' in the sentence.
3

Sentence: 'the two cats are walking on the desk'. How many words start with the letter 't' in the sentence.
3

Sentence: 'a traffic light sitting on the side of a road'. How many words start with the letter 'o' in the sentence.

2