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

Example Input: Sentence: 'Four small broccoli plants in a brown planter'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'an older person holding an open umbrella'. Count the number of nouns in this sentence.
Example Output: 2

Example Input: Sentence: 'Two people holding surf boards walking to the water'. Count the number of verbs in this sentence.
Example Output:
2