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

Example Input: Sentence: 'there are a group elephants that can be seen in the wild'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'There's a toilet in a bathroom with a mirror behind it'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'The large red stop sign is hanging up'. Count the number of verbs in this sentence.
Example Output:
1