Deduct a major theme from the given book review
The book ‘A Doll’s House’ is an enlightening read that provides valuable insights into gender equality, marriage and other social conventions.
A major theme in the book "A Doll's House" is gender equality.
Complete the following task based on the instruction and optional input provided.### Instruction:
Deduct a major theme from the given book review

### Input:
The book ‘A Doll’s House’ is an enlightening read that provides valuable insights into gender equality, marriage and other social conventions.

### Output:
A major theme in the book "A Doll's House" is gender equality.