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: 'group of zebras and gazelles grazing on the grass'. How many words start with the letter 'g' in the sentence.
4

Sentence: 'a cat inside a window looking out near another cat'. How many words start with the letter 'n' in the sentence.
1

Sentence: 'a red light with a frowning face imposed on it'. How many words start with the letter 'i' in the sentence.

2