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

Example Input: Sentence: 'A cardboard sign is stapled onto a tree on a street'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'A hand holding a partially eaten doughnut hole'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'A bath tub with potted plants in it'. Count the number of nouns in this sentence.
Example Output:
3