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: 'A person is walking down the beach holding a surfboard'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'There are two giraffes and a zebra walking around the dirt path'. Count the number of verbs in this sentence.
Example Output:
1