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 group of people standing around an airplane on top of a field'. How many words start with the letter 'a' in the sentence.
5

Sentence: 'a person holding a cell phone in their hand'. How many words start with the letter 'h' in the sentence.
2

Sentence: 'a bird trying to eat out of a bird house'. How many words start with the letter 'o' in the sentence.

2