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

Ex Input:
Sentence: 'Two people standing next to a huge wall looking at their cell phones'. Count the number of nouns in this sentence.

Ex Output:
4


Ex Input:
Sentence: 'A dog sits on a bed next to a cellphone and a pen'. Count the number of nouns in this sentence.

Ex Output:
4


Ex Input:
Sentence: 'A snowboarder travels down a steep snowy hill'. Count the number of verbs in this sentence.

Ex Output:

1