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

Example Input: Sentence: 'The bench seat by the window is empty'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'a couple people that are walking across the road'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'Two signs in the grass outside a building'. Count the number of verbs in this sentence.
Example Output:
0