Given a product description, classify it into one of the following categories: vehicle, clothing, electronics.
A red mountain bike
The product description classifies as a "vehicle".
Complete the following task based on the instruction and optional input provided.### Instruction:
Given a product description, classify it into one of the following categories: vehicle, clothing, electronics.

### Input:
A red mountain bike

### Output:
The product description classifies as a "vehicle".