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 dog on one side of a glass door and a cat on the other side'. How many words start with the letter 'a' in the sentence.
4

Sentence: 'a traffic light showing green signalstreet sign board is there'. How many words start with the letter 't' in the sentence.
2

Sentence: 'a herd of zebras grazing in a field and a rainbow'. How many words start with the letter 'i' in the sentence.

1