Question: Who is the cast member of the show having Lydia Brandner?

full_context: Document 1: Timo Mendes: Timo Mendes is a fictional character from the German soap opera "Verbotene Liebe (Forbidden Love)". Remo Schulze debuted in the role on 23 June 2011. Timo is the son of Julia von Anstetten and her first husband Tim Sander.
Document 2: Nathalie Brandner: Nathalie Brandner (née Käppler, formerly von Lahnstein) is a fictional character from the German soap opera "Verbotene Liebe (Forbidden Love)". The character is portrayed by actress Jenny Winkler. She first appeared on 12 November 2004 and had her final appearance on 14 December 2010.
Document 3: Matthias Brandner: Matthias Brandner is a fictional character from the German soap opera "Verbotene Liebe (Forbidden Love)" portrayed by actor and entertainer Thomas Ohrner. He made his first appearance on screen on 15 January 2008 and had his final appearance on 14 December 2010.
Document 4: Julia Mendes: Julia Mendes (born Prozeski, adopted von Anstetten and formerly Sander) is a fictional character from the German soap opera "Verbotene Liebe (Forbidden Love)", played by Valerie Niehaus. She is introduced in the series' premiere on January 2, 1995. She departed from the series in July 1997, when Niehaus decided to pursue other roles. The role was surprisingly recast with well-known actress Nina Bott in 2011; reinstating the Brandner family and the original story of the show. Bott appeared for the first time on-screen on June 23, 2011. She eventually finished shooting her story arc in October 2011 and last appeared on January 18, 2012. The character is known as the first protagonist of the show and her main story focuses around the incestuous love to her twin-brother Jan Brandner.
Document 5: Jana von Lahnstein: Jana von Lahnstein ("née" Brandner) is a fictional character in the German soap opera "Verbotene Liebe" ("Forbidden Love"). The character was played by the actress Friederike Sipp from 1 October 2002 to 21 March 2005. The character was recast with Vanessa Jung, who played the role from 23 March 2005 to 20 February 2008.
Document 6: Sylvia Jones (Verbotene Liebe): Sylvia Jones (née Novak and formerly von Beyenbach) is a fictional character on German soap opera "Verbotene Liebe (Forbidden Love)". The character was portrayed by actress Heike Brentano from February 18, 2002 to April 28, 2005 and in guest appearances on June 2 and June 6, 2006.
Document 7: Lydia Brandner: Lydia Brandner (divorced von Lahnstein) is a fictional character from the German soap opera "Verbotene Liebe" (Forbidden Love). The role was originated by actress Theresa Underberg on 16 January 2008. Theresa announced on 21 December 2010 that she will leave the show in early 2011. She made her last appearance on 29 March 2011.
Document 8: Jan Brandner: Jan Brandner is a fictional character on German soap opera "Verbotene Liebe (Forbidden Love)". The character was played from the show's debut on January 2, 1995 to August 27, 1997 by actor Andreas Brucker. In March 2011, the role was surprisingly recast with actor Hubertus Grimm; reinstating the Brandner family and the original story of the show. Grimm debuted in the role on June 23, 2011. The role was reactivated on short-term for a special of the show on the Spanish island Mallorca. The character made his last appearance on January 18, 2012.
Document 9: Judith Hagendorf: Judith Hagendorf is a fictional character on the German soap opera "Verbotene Liebe (Forbidden Love)" portrayed by actress Katrin Heß from February 18, 2008 to September 15, 2009, when the character was surprisingly written out without any conformation from the production.
Document 10: Clarissa von Anstetten: Clarissa von Anstetten (née Prozeski and formerly Kaufmann) is a fictional character on German soap opera "Verbotene Liebe (Forbidden Love)". The character is played by actress Isa Jank from the show's debut on 2 January 1995 to 5 September 2001 and again since 21 June 2011. She left the show again on 20 March 2013.
Document 11: Paul Brandner: Paul Brandner is a fictional character of German soap opera "Verbotene Liebe (Forbidden Love)". The character was portrayed by actor Tobias Schönenberg from April 15, 2005 to April 27, 2007. Paul was written out, when Schönenberg decided not to re-sign with the show .
Document 12: Fabian Brandner: Fabian Brandner is a fictional character on the German soap opera "Verbotene Liebe (Forbidden Love)". The character was portrayed by Shai Hoffmann from January 22, 2008 to August 14, 2008 and in guest appearances from January 12, 2009 to January 22, 2009.
Document 13: Tanja von Lahnstein: Tanja von Lahnstein (née Wittkamp, formerly von Anstetten, Rai and von Lahnstein) is a fictional character from the German soap opera "Verbotene Liebe (Forbidden Love)", played by actress Miriam Lahnstein. She made her first appearance on-screen on 21 June 1995 and left after three years in May 1998. Lahnstein returned to the role in 2001, where she was seen from 24 April to 5 October. She came back another three years later and reappeared on 16 April 2004. Lahnstein left the show for a short time, while being on contract, from June 2005 to March 2006 and from March to December 2007 during the pregnancy of her two children. She left again in December 2009 and returned in April 2010.
Document 14: Katja Brandner: Katja Brandner is a fictional character on German daytime soap opera "Verbotene Liebe" ("Forbidden Love"). The character was portrayed by actress Diana Frank from January 15, 2008 to January 5, 2009.
Document 15: Rebecca von Lahnstein: Rebecca von Lahnstein is a character on the German soap opera "Verbotene Liebe (Forbidden Love)". The character was portrayed by Jasmin Lord and debuted on June 17, 2008. In 2009, Lord earned the "Miss Soap award" as the most beautiful actress in a soap opera, followed by the "German Soap Award" as Sexiest Woman in 2011. It was announced on January 18, 2011 that Lord is going to leave the show and finishes shooting in April 2011. She made her last on-screen appearance on July 27, 2011. After a few months the character was recast with Tatjana Kästel, who made her first on-screen appearance on February 13, 2012.
ground_truth: Valerie Niehaus
sub_queries: What show is Lydia Brandner from? Answer: Verbotene Liebe
Verbotene Liebe >> cast member Answer: Valerie Niehaus