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 white dog laying in an open suitcase'. How many words start with the letter 'i' in the sentence.
1

Sentence: 'some zebras standing around in a special area'. How many words start with the letter 'i' in the sentence.
1

Sentence: 'piles of luggage is sitting behind a bar'. How many words start with the letter 'a' in the sentence.

1