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: 'A photo take though glass of a polar pear diving under water'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'a birthday cake made to look like it's bleeding after being stabbed'. Count the number of verbs in this sentence.

Ex Output:

4