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

Example Input: Sentence: 'A series of photographs showing an adorable white dog and lots of yellow fire hydrants'. Count the number of nouns in this sentence.
Example Output: 6

Example Input: Sentence: 'A woman holding a tennis racquet on a tennis court'. Count the number of nouns in this sentence.
Example Output: 5

Example Input: Sentence: 'Young bots climbing on the back of a  big rig'. Count the number of nouns in this sentence.
Example Output:
3