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

Example Input: Sentence: 'A bid walking on a stream of water next to green plants'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A large amount of bananas grouped together in a line'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'A tennis player has just attempted to hit the ball'. Count the number of verbs in this sentence.
Example Output:
2