Given two countries, name three cities located within them.
Japan, India
Japan: Tokyo, Kyoto, Osaka
India: Mumbai, New Delhi, Kolkata
Complete the following task based on the instruction and optional input provided.### Instruction:
Given two countries, name three cities located within them.

### Input:
Japan, India

### Output:
Japan: Tokyo, Kyoto, Osaka
India: Mumbai, New Delhi, Kolkata