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

Example Input: Sentence: 'A group of people march across a field with a red flag'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'A small kitchen counter with appliances and a shelf'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'A boy sitting at a black table with white plates of cake'. Count the number of nouns in this sentence.
Example Output:
4