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

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

Ex Output:
1

Ex Input:
Sentence: 'Ceramic dishes of food on a white table'. Count the number of verbs in this sentence.

Ex Output:
0

Ex Input:
Sentence: 'a black gray and white cat and a green vase'. Count the number of verbs in this sentence.

Ex Output:
0