Provide two examples for a metaphor
1. Life is a roller coaster with its ups and downs.

2. The world is a stage, and we are all actors playing our roles.
Complete the following task based on the instruction and optional input provided.### Instruction:
Provide two examples for a metaphor

### Output:
1. Life is a roller coaster with its ups and downs.

2. The world is a stage, and we are all actors playing our roles.