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

Example Input: Sentence: 'An adult polar bear with two baby bears following on the snow'. Count the number of verbs in this sentence.
Example Output: 1

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 bathroom with a toilet and a counter next to a door'. Count the number of verbs in this sentence.
Example Output:
0