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

Example Input: Sentence: 'A group of people having dinner and drinking wine'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'A picture of a cat looking at its reflection in the water'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'A woman holds a bunch of bananas on a motor bike'. Count the number of nouns in this sentence.
Example Output:
5