In this task, you need to count the number of nouns/verbs in the given sentence.

Example Input: Sentence: 'two people in a field near a tree with a frisbee'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'An oriental musical group gathered in a field'. Count the number of nouns in this sentence.
Example Output: 2

Example Input: Sentence: 'A marina area full of boats lined in rows'. Count the number of nouns in this sentence.
Example Output:
4