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

Example Input: Sentence: 'There is a line of blue umbrellas on a beach'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'a plate of food that is on a table'. Count the number of nouns in this sentence.
Example Output: 3

Example Input: Sentence: 'a man in a green shirt is playing tennis'. Count the number of verbs in this sentence.
Example Output:
1