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

Example Input: Sentence: 'A lady riding a rodeo horse preparing to round a barrel'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'A man sitting at a table in front of a laptop computer'. Count the number of nouns in this sentence.
Example Output: 5

Example Input: Sentence: 'Elephants and zebra roam freely around the desert'. Count the number of nouns in this sentence.
Example Output:
3