List four famous 20th century authors.
1. Ernest Hemingway
2. F. Scott Fitzgerald
3. George Orwell
4. Virginia Woolf
Complete the following task based on the instruction and optional input provided.### Instruction:
List four famous 20th century authors.

### Output:
1. Ernest Hemingway
2. F. Scott Fitzgerald
3. George Orwell
4. Virginia Woolf