Question: How long was the marriage of the couple who starred in the movie  Steel Dawn?

Context paragraphs:
Don Korotsky Norte: Don Korotsky Norte is an American gay rights political activist.  He is one half of a Los Angeles gay couple who have been together since meeting in high school in 1978.  Don's initial desire to marry his high school sweetheart made headlines in a 1995 "Los Angeles Times" article when the couple expressed their desire to hop on a plane to Hawaii and then seek to enforce their marriage rights in California.  The Times article was one of the first that documented the rise of Defense of Marriage Act or DOMA a year later.  In 2008 "Advocate Magazine" featured Norte's marriage to his spouse during the Summer of Love in 2008.  Norte and his spouse were both Log Cabin Republicans during the campaign for marriage equality.

Common-law marriage: Common-law marriage, also known as sui iuris ("sui juris") marriage, informal marriage, marriage by habit and repute, or marriage in fact is a legal framework in a limited number of jurisdictions where a couple is legally considered married, without that couple having formally registered their relation as a civil or religious marriage.  The original concept of a "common-law marriage" is a marriage that is considered valid by both partners, but has not been formally recorded with a state or religious registry, or celebrated in a formal religious service.  In effect, the act of the couple representing themselves to others as being married, and organizing their relation as if they were married, acts as the evidence that they are married.

Marriage in ancient Greece: The institution of marriage in ancient Greece encouraged responsibility in personal relationships.  Marriages were usually arranged by the parents; professional matchmakers were reluctantly used.  Each city was politically independent, with its own laws affecting marriage.  Orphaned daughters were left to uncles or cousins.  For the marriage to be legal, the woman's father or guardian gave permission to a suitable male who could afford to marry.  Wintertime marriages were popular.  The couple participated in a ceremony which included rituals such as veil removal but the couple living together made the marriage legal.

Common-law marriage in the United States: Common-law marriage, also known as sui juris marriage, informal marriage, marriage by habit and repute, or marriage in fact is a legal framework in a limited number of jurisdictions where a couple is legally considered married, without that couple having formally registered their relation as a civil or religious marriage.  The original concept of a "common-law marriage" is a marriage that is considered valid by both partners, but has not been formally recorded with a state or religious registry, or celebrated in a formal religious service.  In effect, the act of the couple representing themselves to others as being married, and organizing their relation as if they were married, acts as the evidence that they are married.

Steel Dawn: Steel Dawn is a 1987 American post-apocalyptic science fiction action film that mixes the genres of science fiction and western.  It stars Patrick Swayze and his wife, Lisa Niemi.

Lisa Niemi: Lisa Anne Haapaniemi Swayze DePrisco (born May 26, 1956), also known by her stage name, Lisa Niemi, is an American writer, director, actress and dancer.  She is the widow of actor, singer, and dancer Patrick Swayze.  They were married for 34 years, from 1975 until his death in 2009.

Marriage of Billie Ert and Antonio Molina: The marriage of Billie Ert and Antonio Molina took place on October 5, 1972, in Houston, Texas, United States.  Ert and Molina's marriage was called the first legal same-sex marriage in Texas and one of the first in the U.S., and their marriage license was the first granted to a same-sex couple in Texas.  Ert, a drag queen, and Molina, a shipping clerk, received the license through having Ert dress in drag; the county clerk's office did not ask for their sexes and issued them a marriage license, which they used to marry one day later.  At that time, homosexuality was illegal in Texas.  Although it was later declared null and void by the Texas Attorney General after a long legal battle, the union made international headlines and became a media sensation.  The failed lawsuit sparked Texas legislation that specifically defined marriage as between a man and a woman, which it had not yet done, and was seen as a large setback for LGBT rights in the United States.

The Dawn and Drew Show: The Dawn and Drew Show is a podcast starring and produced by a married couple, Dawn Miceli (born in West Allis, Wisconsin) and Drew Domkus (formerly of the Scaterd Few).  The couple moved back to their farmhouse in Wayne, Wisconsin after being robbed and nearly killed in their home in Playa Cocles, Costa Rica.  While they regroup and work up a game plan, Dawn Miceli continues to tour with the band Rasputina while Drew tries to learn how to make iPhone apps.

Ceremonial marriage: Ceremonial marriage is a common form of marriage in which a couple follows laws and procedures specified by the state in order to gain recognition of their marriage (ex.  buying a marriage license, participating in a ceremony led by an authorized official, having witnesses at a ceremony).  They are often accompanied by weddings, and have different forms, reflecting particular religious and philosophical views of the couple.

Stokes interview: The Stokes interview is a secondary interview conducted on a couple who are trying to obtain an immigration green card in the United States on the basis of their marriage.  It occurs when the immigration officer conducting the adjustment of status interview suspects that a couple's marital status is fraudulent.  The Stokes interview is offered as a second chance for the couple to prove their marriage's legitimacy.  What separates the Stokes interview from the initial adjustment of status interview, which is usually the only interview necessary in the process, is that during the Stokes interview couples are interviewed separately instead of together.  The two interviews are recorded and compared for discrepancies.  Applicants have a right to have an attorney present throughout both separate interviews.  The Stokes interview is also sometimes known as a marriage fraud interview.

Supporting paragraphs: Steel Dawn Lisa Niemi
Answer: 34 years