Question: What is the birthday of the woman Romy Ruyssen fought in the first Invicta Fighting Championships?

Context paragraphs:
Sarah D'Alelio: Sarah D'Alelio (born December 13, 1980) is a professional mixed martial artist.  She competes in the 135-pound women's bantamweight division for Invicta Fighting Championships and has also fought for Strikeforce.

Romy Ruyssen: Romy Ruyssen (born August 24, 1989) is a French mixed martial artist.  She has competed professionally since 2007 and headlined the first Invicta Fighting Championships event against Marloes Coenen and holds a submission win over former UFC fighter Sheila Gaff.

List of Invicta FC events: This is a list of events that Invicta Fighting Championships have held since their inaugural event, Invicta FC 1: Coenen vs. Ruyssen.  The promotion has held twenty five events as of September 2017.

Invicta Fighting Championships: Invicta Fighting Championships, also known as Invicta FC, is an American professional mixed martial arts (MMA) promotion for female fighters based in the United States.  It was founded in 2012 by Janet Martin a former VP with MMA organization Blackeye Promotions and Shannon Knapp, who held positions at various levels, including executive positions with King of the Cage, World Fighting Alliance, International Fight League, Affliction Entertainment, UFC, and Strikeforce.  It has a strategic partnership with fellow Japanese MMA promotion Jewels.

Tonya Evinger: Tonya Evinger (born June 4, 1981) is an American mixed martial artist.  She previously competed for EliteXC, Raging Wolf and Invicta Fighting Championships, and was the Invicta Bantamweight Champion.  She is currently signed to Ultimate Fighting Championship (UFC).

Marloes Coenen: Marloes Coenen (born March 31, 1981) is a retired Dutch mixed martial artist.  She has competed professionally since 2000 and is a former Strikeforce Women's Bantamweight Champion.

Women's mixed martial arts: While mixed martial arts is primarily a male dominated sport, it does have female athletes.  Female competition in Japan includes promotions such as DEEP Jewels.  Now defunct promotions that featured female fighters were Valkyrie, and Smackgirl.  Professional mixed martial arts organizations in the United States that invite women to compete are industry leader Ultimate Fighting Championship, the all female Invicta Fighting Championships, Resurrection Fighting Alliance, Bellator Fighting Championships, and Legacy Fighting Championship.  Now defunct promotions that featured female fighters were Strikeforce and EliteXC.

Julie Kedzie: Julie Kedzie (born March 18, 1981) is a retired American mixed martial artist.  She is a third degree black belt in Tae Kwon Do and specializes in Brazilian Jiu-Jitsu.  Kedzie was Greg Jackson's personal assistant at Jackson's Mixed Martial Arts.  Kedzie has been working for Invicta Fighting Championships as a fight commentator and interviewer.  In December 2013, Kedzie became the new matchmaker for Invicta FC.

Jessica Penne: Jessica Penne (born January 30, 1983) is an American mixed martial artist.  She was the first Invicta FC Atomweight Champion.  She also competed in the first women's bout in Bellator Fighting Championships.  She currently competes in the Women's Strawweight division of the Ultimate Fighting Championship (UFC).

Raquel Pennington: Raquel Pennington (born September 5, 1988) is an American mixed martial artist who competes in Ultimate Fighting Championship women's bantamweight division.  She has previously fought for Invicta Fighting Championships.

Supporting paragraphs: Romy Ruyssen Marloes Coenen
Answer: March 31, 1981