Question: What is Royal Rumble?

Context paragraphs:
Royal Rumble (1999): Royal Rumble (1999) (also known as Royal Rumble: No Chance in Hell) was the twelfth annual Royal Rumble professional wrestling pay-per-view event produced by the World Wrestling Federation (WWF).  It took place on January 24, 1999, at the Arrowhead Pond of Anaheim in Anaheim, California.  The tagline and subtitle of the event was taken from a promise by Mr. McMahon that the first entrant in the Royal Rumble, Stone Cold Steve Austin, had "no chance in hell" of winning the match.  The theme song for the event, based on the phrase, would go on to become the entrance music for McMahon's stable The Corporation and later, just McMahon himself, which he uses to this day.

Royal Rumble (2008): Royal Rumble (2008) was the twenty-first annual Royal Rumble professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE).  It took place on January 27, 2008, at Madison Square Garden in New York, New York and featured talent from the Raw, SmackDown, and ECW brands.  The event was also the first WWE pay-per-view broadcast in high definition.  As has been customary since 1993, the Royal Rumble match winner received a match at that year's WrestleMania, (in this instance: WrestleMania XXIV) for his choice at either the WWE Championship, the World Heavyweight Championship, or the ECW World Championship.

Royal Rumble (1988): Royal Rumble (1988) was the first annual Royal Rumble professional wrestling event produced by the World Wrestling Federation (WWF).  It took place on January 24, 1988, at the Copps Coliseum in Hamilton, Ontario.  Unlike the subsequent Royal Rumble events, this event was not shown on pay-per-view and was instead a television special shown on the USA Network.  However, in 2014, WWE Network listed this event alongside the rest of the Royal Rumbles in the pay-per-view section.

Royal Rumble (1993): Royal Rumble (1993) was the sixth annual Royal Rumble professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF).  It took place on January 24, 1993 at the ARCO Arena in Sacramento, California.  The main event was a Royal Rumble match, a battle royal in which two wrestlers started the match in the ring; every two minutes, another wrestler joined.  In total, thirty wrestlers competed to eliminate their competitors by throwing them over the top rope of the wrestling ring onto the arena floor.  Yokozuna won the match and was awarded an opportunity to wrestle for the WWF World Heavyweight Championship at WrestleMania IX.  Bret Hart also retained his WWF World Heavyweight Championship against Razor Ramon, and Shawn Michaels successfully defended his WWF Intercontinental Championship against Marty Jannetty.

Royal Rumble (1995): Royal Rumble (1995) was the eighth annual Royal Rumble professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF).  It took place on January 22, 1995, in the USF Sun Dome located in Tampa, Florida.

Royal Rumble (2016): Royal Rumble (2016) was a professional wrestling pay-per-view (PPV) event, produced by WWE.  It took place on January 24, 2016, at the Amway Center in Orlando, Florida.  It was the 29th event in the Royal Rumble chronology.  The event also was the fifth Royal Rumble pay-per-view to be held in the state of Florida (1990, 1991, 1995, and 2006), the second (1990) to be held in Orlando, and the first pay-per-view event at the Amway Center.  The Royal Rumble match was the second that was contested for the WWE World Heavyweight Championship (after the 1992 Rumble), and the first match in which the champion defended his title in the Rumble match.

Royal Rumble (2007): Royal Rumble (2007) was the twentieth annual Royal Rumble professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE).  It took place on January 28, 2007, at the AT&T Center in San Antonio, Texas and featured talent from the Raw, SmackDown!  and ECW brands.  This marked the first time that the new ECW brand participated in the Royal Rumble match.  As has been customary since 1993, the Royal Rumble match winner received a match at that year's WrestleMania, (in this instance: WrestleMania 23) for his choice at either the WWE Championship, the World Heavyweight Championship or the ECW World Championship.

Royal Rumble (2010): Royal Rumble (2010) was the twenty-third annual Royal Rumble professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE).  It took place on January 31, 2010, at the Philips Arena in Atlanta, Georgia and featured talent from the Raw, SmackDown, and ECW brands.  As has been customary since 1993, the Royal Rumble match winner received a match at that year's WrestleMania, (in this instance: WrestleMania XXVI) for his choice at either the WWE Championship, the World Heavyweight Championship, or the ECW Championship.

Royal Rumble (2003): Royal Rumble (2003) was the sixteenth annual Royal Rumble professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE).  It took place on January 19, 2003, at the Fleet Center in Boston, Massachusetts, was the first Royal Rumble produced under the WWE name and employed talent from the Raw and SmackDown!  brands.  As has been customary since 1993, the Royal Rumble match winner received a match at that year's WrestleMania, (in this instance: WrestleMania XIX) for his brand's World title, either the WWE Championship or the World Heavyweight Championship.

Royal Rumble (1994): Royal Rumble (1994) was the seventh annual Royal Rumble professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF).  It took place on January 22, 1994, at the Providence Civic Center in Providence, Rhode Island.  The main event was the Royal Rumble match, a battle royal in which wrestlers enter the ring at regular intervals.  Lex Luger and Bret Hart were named co-winners after they simultaneously eliminated each other.

Supporting paragraphs: Royal Rumble (2016) Royal Rumble (1995)
Answer: wrestling