Combine the sentences to form a new sentence.
The sun rises on the horizon. A new day begins.
As the sun rises on the horizon, a new day begins.
Complete the following task based on the instruction and optional input provided.### Instruction:
Combine the sentences to form a new sentence.

### Input:
The sun rises on the horizon. A new day begins.

### Output:
As the sun rises on the horizon, a new day begins.