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

Ex Input:
Sentence: 'A bird with a long beak wades in algae-covered water'. Count the number of verbs in this sentence.

Ex Output:
2


Ex Input:
Sentence: 'a man is pulling is surfboard towards the water'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'a black dog carrying a blue and black case filled with items'. Count the number of verbs in this sentence.

Ex Output:

2