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

Example Input: Sentence: 'A little cat sits on a laptop keyboard'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A white sink sitting underneath a mirror in a bathroom'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A street sign sitting next to a tree'. Count the number of verbs in this sentence.
Example Output:
1