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

Example Input: Sentence: 'A dog sits on a bed next to a cellphone and a pen'. Count the number of nouns in this sentence.
Example Output: 4

Example Input: Sentence: 'A very old style fire truck at the station'. Count the number of verbs in this sentence.
Example Output: 0

Example Input: Sentence: 'Many bicyclists wearing helmets race down the street'. Count the number of verbs in this sentence.
Example Output:
2