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

Example Input: Sentence: 'A collection of headshots dot the picture frame'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'A jumbo jet airplane flying through the air'. Count the number of verbs in this sentence.
Example Output: 1

Example Input: Sentence: 'Two orange cats playing and fighting on a couch'. Count the number of nouns in this sentence.
Example Output:
2