We're giving you the chance to win preview tickets to see the legal biopic On the Basis of Sex in Dublin next Wednesday, February 6, at 7:00pm.

The makers of the movie say: "On the Basis of Sex is inspired by the true story of a young Ruth Bader Ginsburg - then a struggling attorney and new mother - who faces adversity and numerous obstacles in her fight for equal rights throughout her career.

"When Ruth takes on a groundbreaking tax case with her husband, attorney Martin Ginsburg, she knows it could change the direction of her career and the way the courts view gender discrimination. The film also chronicles the storybook-like romance between Ruth and Marty, a partnership that succeeded both personally and professionally.

"On the Basis of Sex is directed by Mimi Leder (The Leftovers, Deep Impact) and stars Felicity Jones (The Theory of Everything, Rogue One: A Star Wars Story) as Ruth Bader Ginsburg, and Armie Hammer (Call Me by Your Name, The Social Network) as Marty Ginsburg, Ruth's husband and legal partner."

On the Basis of Sex is in Irish cinemas from February 22, cert 12a

To be in with a chance of winning, just answer this question:

Who plays Ruth Bader Ginsburg in On the Basis of Sex?

Felicity Jones as Ruth Bader Ginsburg

Send your answer, name and address, marked On the Basis of Comp, to: entertainmentonline@rte.ie.

Strictly one entry per person. Closing date: Friday, February 1. Prize is for tickets to preview screening in Dublin at 7:00pm on February 6 only. No costs will be covered. No cash alternative.

On the Basis of Sex is in Irish cinemas from February 22, cert 12a.