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: 'Two boats are docked at the bank of a river'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'A man in yellow jacket on street next to a car'. Count the number of nouns in this sentence.
Example Output:
4