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

Example Input: Sentence: 'A group of men walk down a path with a group of ox'. Count the number of nouns in this sentence.
Example Output: 5

Example Input: Sentence: 'An artistic version of a roller coaster at theme park'. Count the number of nouns in this sentence.
Example Output: 5

Example Input: Sentence: 'A person grabbing a piece of pizza from a pan'. Count the number of nouns in this sentence.
Example Output:
4