Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Film | Publisher | Director | Distributor | Worldwide Gross | Notes |
| --- | --- | --- | --- | --- | --- | --- |
| 1951 | Superman and the Mole Men | DC Comics | Lee Sholem | Lippert Pictures Inc. |  | Based on Adventures of Superman TV series |
| 1966 | Batman | DC Comics | Leslie H. Martinson | 20th Century Fox | $1,700,000 (est.\nUS/ Canada rentals) | Based on Batman TV series |
| 1977 | Abar, the First Black Superman | Original | Frank Packard | Mirror Releasing |  |  |
| 1978 | Superman | DC Comics | Richard Donner | Warner Bros. | $300,218,018 |  |
| 1978 | Dr. Strange | Marvel Comics | Philip DeGuere | MCA Home Video | Television film |  |
| 1978 | Kiss Meets the Phantom of the Park | Hanna-Barbera | Gordon Hessler | NBC | Television film | Based on the rock band Kiss |
| 1980 | Superman II | DC Comics | Richard Lester | Warner Bros. | $108,185,706 | Sequel to 1978's Superman |
| 1980 | Hero at Large | Original | Martin Davidson | Metro-Goldwyn-Mayer | $15,934,737 |  |
| 1981 | Condorman | Original | Charles Jarrott | Walt Disney Pictures | $287,434 |  |
| 1982 | Swamp Thing | DC Comics | Wes Craven | Embassy Pictures | $287,434 |  |
| 1983 | Superman III | DC Comics | Richard Lester | Warner Bros. | $70,656,090 | Sequel to 1980's Superman II |
| 1984 | Supergirl | DC Comics | Jeannot Szwarc | TriStar Pictures, Warner Bros. | $14,296,438 | Spin-off to 1978's Superman |
| 1984 | The Toxic Avenger | Original | Lloyd Kaufman | Troma Entertainment, | $800,000 |  |
| 1986 | Howard the Duck | Marvel Comics | Willard Huyck | Universal Pictures | $37,962,774 |  |
| 1987 | Superman IV: The Quest for Peace | DC Comics | Sidney J. Furie | Warner Bros. | $15,681,020 | Sequel to 1983's Superman III |
| 1989 | The Toxic Avenger Part II | Original | Lloyd Kaufman | Troma Entertainment, | $792,966 | Sequel to 1984's The Toxic Avenger |
| 1989 | The Toxic Avenger Part III: The Last Temptation of Toxie | Original | Lloyd Kaufman | Troma Entertainment, | $363,561 | Sequel to 1989's The Toxic Avenger Part II |
| 1989 | Batman | DC Comics | Tim Burton | Warner Bros. | $411,348,924 |  |
| 1989 | The Return of Swamp Thing | DC Comics | Jim Wynorski | Millimeter Films | $192,816 | Sequel to 1982's Swamp Thing |
| 1989 | The Punisher | Marvel Comics | Mark Goldblatt | Artisan Entertainment | $287,434 | Direct-to-video in North America |
| 1990 | Teenage Mutant Ninja Turtles | Mirage Comics | Steve Baron | New Line Cinema | $201,965,915 |  |
| 1990 | Darkman | Original | Sam Raimi | Universal Studios | $48,878,502 |  |
| 1990 | Captain America | Marvel Comics | Albert Pyun | 21st Century Film Corporation | $675,437 |  |
| 1991 | Teenage Mutant Ninja Turtles II: The Secret of the Ooze | Mirage Comics | Michael Pressman | New Line Cinema | $78,656,813 | Sequel to 1990's Teenage Mutant Ninja Turtles |
| 1991 | The Guyver | Chuang Yi Publishing | Steve Wang | New Line Cinema |  |  |
| 1991 | The Rocketeer | Pacific Comics | Joe Johnston | Walt Disney Pictures | $62,000,000 |  |
| 1992 | Batman Returns | DC Comics | Tim Burton | Warner Bros. | $266,822,354 | Sequel to 1989's Batman |
| 1993 | Teenage Mutant Ninja Turtles III | Mirage Comics | Stuart Gillard | New Line Cinema | $42,273,609 | Sequel to 1991's Teenage Mutant Ninja Turtles II |
| 1993 | The Meteor Man | Original | Robert Townsend | Metro-Goldwyn-Mayer | $8,023,147 |  |
| 1994 | The Fantastic Four | Marvel Comics | Oley Sassone | Constantin Film | Unreleased |  |
| 1994 | The Crow | Caliber Comics | Alex Proyas | Miramax Films | $144,693,129 |  |
| 1994 | Blankman | Original | Mike Binder | Columbia Pictures | $7,941,977 |  |
| 1994 | The Shadow | Street and Smith Publications | Russell Mulcahy | Universal Studios | $48,063,435 |  |
| 1994 | The Mask | Dark Horse Comics | Chuck Russell | New Line Cinema | $351,583,407 |  |
| 1994 | Guyver: Dark Hero | Chuang Yi Publishing | Steve Wang | New Line Cinema |  | Sequel to 1991's The Guyver |
| 1995 | Batman Forever | DC Comics | Joel Schumacher | Warner Bros. | $336,529,844 | Sequel to 1992's Batman Returns |
| 1995 | Judge Dredd | IPC Media | Danny Cannon | Hollywood Pictures | $113,493,481 |  |
| 1995 | Tank Girl | Dark Horse Comics | Rachel Talalay | United Artists | $4,064,495 |  |
| 1995 | Mighty Morphin Power Rangers: The Movie | Original | Bryan Spicer | 20th Century Fox | $66,433,194 | Based on Mighty Morphin Power Rangers TV series/\nCharacters created by Saban Entertainment |
| 1995 | Black Scorpion | Original | Jonathan Winfrey | Showtime | Television film |  |
| 1995 | Darkman II: The Return of Durant | Original | Bradford May | Universal Studios | Direct-to-video | Sequel to 1990's Darkman |
| 1996 | The Crow: City of Angels | Caliber Comics | Tim Pope | Miramax Films | $17,917,287 | Sequel to 1994's The Crow |
| 1996 | Barb Wire | Dark Horse Comics | David Hogan | Universal Studios | $3,793,614 |  |
| 1996 | Prey of the Jaguar | Original | David DeCoteau | HIT Entertainment |  |  |
| 1996 | The Phantom | Various | Simon Wincer | Paramount Pictures | $17,323,326 |  |
| 1996 | Darkman III: Die Darkman Die | Original | Bradford May | Universal Studios | Direct-to-video | Sequel to 1995's Darkman II: The Return of Durant |
| 1997 | Black Scorpion II: Aftershock | Original | Jonathan Winfrey | Showtime | Television film | Sequel to 1995's Black Scorpion |
| 1997 | Batman & Robin | DC Comics | Joel Schumacher | Warner Bros. | $238,207,122 | Sequel to 1995's Batman Forever |
| 1997 | Spawn | Image Comics | Mark A.Z. Dippe | New Line Cinema | $87,840,042 |  |
| 1997 | Steel | DC Comics | Kenneth Johnson | Warner Bros. | $1,710,972 |  |
| 1997 | Star Kid | Original | Manny Coto | Trimark Pictures | $7,029,025 |  |
| 1998 | Blade | Marvel Comics | Stephen Norrington | New Line Cinema | $131,183,530 |  |
| 1999 | Mystery Men | Dark Horse Comics | Kinka Usher | Universal Pictures | $33,461,011 | Comedy film |
| 2000 | The Crow: Salvation | Caliber Comics | Bharat Nalluri | Dimension Films |  | Sequel to 1996's The Crow: City of Angels |
| 2000 | X-Men | Marvel Comics | Bryan Singer | 20th Century Fox | $296,339,527 |  |
| 2000 | Citizen Toxie: The Toxic Avenger Part IV | Original | Lloyd Kaufman | Troma Entertainment, |  | Sequel to 1989's The Toxic Avenger Part III: The Last Temptation of Toxie |
| 2000 | The Specials | Original | Craig Mazin | Regent Entertainment | $13,276 | Comedy film |
| 2000 | Unbreakable | Original | M. Night Shyamalan | Touchstone Pictures | $248,118,121 | Psychological thriller |
| 2002 | Blade II | Marvel Comics | Guillermo del Toro | New Line Cinema | $155,010,032 | Sequel to 1998's Blade |
| 2002 | Spider-Man | Marvel Comics | Sam Raimi | Columbia Pictures | $821,708,551 |  |
| 2003 | Daredevil | Marvel Comics | Mark Steven Johnson | 20th Century Fox | $179,179,718 |  |
| 2003 | X2: X-Men United | Marvel Comics | Bryan Singer | 20th Century Fox | $407,711,549 | Sequel to 2000's X-Men |
| 2003 | Hulk | Marvel Comics | Ang Lee | Universal Studios | $245,360,480 |  |
| 2003 | The League of Extraordinary Gentlemen | WildStorm/DC Comics | Stephen Norrington | 20th Century Fox | $179,265,204 |  |
| 2004 | Hellboy | Dark Horse Comics | Guillermo del Toro | Columbia Pictures | $99,318,987 |  |
| 2004 | The Punisher | Marvel Comics | Jonathan Hensleigh | Lionsgate | $54,700,105 | Reboot of The Punisher film franchise |
| 2004 | Spider-Man 2 | Marvel Comics | Sam Raimi | Columbia Pictures | $783,766,341 | Sequel to 2002's Spider-Man |
| 2004 | Catwoman | DC Comics | Pitof | Warner Bros. | $82,102,379 |  |
| 2004 | Blade: Trinity | Marvel Comics | David S. Goyer | New Line Cinema | $128,905,366 | Sequel to 2002's Blade II |
| 2005 | Elektra | Marvel Comics | Rob Bowman | 20th Century Fox | $56,681,566 | Spin-off to 2003's Daredevil |
| 2005 | Constantine | DC Comics/Vertigo | Francis Lawrence | Warner Bros. | $230,884,728 |  |
| 2005 | The Crow: Wicked Prayer | Caliber Comics | Lance Mungia | Dimension Films |  | Sequel to 2000's The Crow: Salvation |
| 2005 | Son of the Mask | Dark Horse Comics | Lawrence Guterman | New Line Cinema | $57,552,641 | Sequel to 1994's The Mask |
| 2005 | The Adventures of Sharkboy and Lavagirl in 3-D | Original | Robert Rodriguez | Dimension Films/\nColumbia Pictures | $69,425,967 | Comedy, family film |
| 2005 | Batman Begins | DC Comics | Christopher Nolan | Warner Bros. | $374,218,673 | Reboot of the Batman film franchise |
| 2005 | Fantastic Four | Marvel Comics | Tim Story | 20th Century Fox | $330,579,719 |  |
| 2005 | Man-Thing | Marvel Comics | Brett Leonard | Cinemax | Direct-to-video |  |
| 2005 | Sky High | Original | Mike Mitchell | Walt Disney Pictures | $86,369,815 | Comedy, family film |
| 2005 | V for Vendetta | DC Comics/Vertigo | James McTeigue | Warner Bros. | $132,511,035 |  |
| 2006 | X-Men: The Last Stand | Marvel Comics | Brett Ratner | 20th Century Fox | $459,359,555 | Sequel to 2003's X2: X-Men United |
| 2006 | Superman Returns | DC Comics | Bryan Singer | Warner Bros. | $391,081,192 | Alternative sequel to 1980's Superman II |
| 2006 | Lightspeed | Original | Don E. FauntLeRoy | Nu Image Films | Direct-to-video | Created by Stan Lee |
| 2006 | Zoom | Original | Peter Hewitt | Sony Pictures | $12,506,188 |  |
| 2007 | Ghost Rider | Marvel Comics | Mark Steven Johnson | Columbia Pictures | $228,738,393 |  |
| 2007 | Spider-Man 3 | Marvel Comics | Sam Raimi | Columbia Pictures | $890,871,626 | Sequel to 2004's Spider-Man 2 |
| 2007 | Fantastic Four: Rise of the Silver Surfer | Marvel Comics | Tim Story | 20th Century Fox | $289,047,763 | Sequel to 2005's Fantastic Four |
| 2007 | Underdog | Various | Frederik Du Chau | Walt Disney Pictures | $65,270,477 |  |
| 2008 | Superhero Movie | Original | Craig Mazin | Metro-Goldwyn-Mayer | $71,237,351 | Spoof film |
| 2008 | Iron Man | Marvel Comics | Jon Favreau | Paramount Pictures | $585,174,222 |  |
| 2008 | Wanted | Top Cow Productions | Timur Bekmambetov | Universal Pictures | $341,433,252 |  |
| 2008 | The Incredible Hulk | Marvel Comics | Louis Leterrier | Universal Studios | $263,427,551 | Reboot of the Hulk film franchise |
| 2008 | Hancock | Original | Peter Berg | Columbia Pictures | $624,386,746 | Comedy-drama |
| 2008 | Hellboy II: The Golden Army | Dark Horse Comics | Guillermo del Toro | Universal Studios | $160,388,063 | Sequel to 2004's Hellboy |
| 2008 | The Dark Knight | DC Comics | Christopher Nolan | Warner Bros. | $1,004,558,444 | Sequel to 2005's Batman Begins |
| 2008 | Punisher: War Zone | Marvel Comics | Lexi Alexander | Lionsgate | $10,100,036 | Reboot of The Punisher film franchise |
| 2008 | The Spirit | DC Comics | Frank Miller | Lionsgate | $39,031,337 |  |
| 2009 | Watchmen | DC Comics | Zack Snyder | Warner Bros. | $185,258,983 |  |
| 2009 | Push | Original | Paul McGuigan | Summit Entertainment | $48,808,215 |  |
| 2009 | X-Men Origins: Wolverine | Marvel Comics | Gavin Hood | 20th Century Fox | $373,062,864 | Prequel to the X-Men film trilogy |
| 2009 | Defendor | Original | Peter Stebbings | Sony Pictures, Darius Films, Alliance Films | $44,462 |  |
| 2010 | Kick-Ass | Icon Comics/Marvel Comics | Matthew Vaughn | Lionsgate | $96,188,903 |  |
| 2010 | Super | Original | James Gunn | IFC Films / StudioCanal | $327,716 | IFC's most successful VOD film so far |
| 2010 | Iron Man 2 | Marvel Comics | Jon Favreau | Paramount Pictures | $623,933,331 | Sequel to 2008's Iron Man |
| 2010 | Jonah Hex | DC Comics | Jimmy Hayward | Warner Bros. | $10,903,312 |  |
| 2011 | The Green Hornet | Holyoke Publishing/\nNOW Comics | Michel Gondry | Columbia Pictures | $227,817,248 |  |
| 2011 | Thor | Marvel Comics | Kenneth Branagh | Paramount Pictures | $449,326,618 |  |
| 2011 | X-Men: First Class | Marvel Comics | Matthew Vaughn | 20th Century Fox | $353,624,124 | Prequel to the X-Men film trilogy |
| 2011 | Green Lantern | DC Comics | Martin Campbell | Warner Bros. | $219,851,172 |  |
| 2011 | Vs | Original | Jason Trost | Image Entertainment |  |  |
| 2011 | Captain America: The First Avenger | Marvel Comics | Joe Johnston | Paramount Pictures | $370,569,774 | Reboot of the Captain America film franchise |
| 2012 | Chronicle | Original | Josh Trank | 20th Century Fox | $126,636,097 | Superhero movie in the 'found-footage' genre |
| 2012 | Ghost Rider: Spirit of Vengeance | Marvel Comics | Neveldine/Taylor | Columbia Pictures | $132,563,930 | Sequel to 2007's Ghost Rider |
| 2012 | The Avengers | Marvel Comics | Joss Whedon | Walt Disney Studios Motion Pictures | $1,518,594,910 | In continuity with 2008's Iron Man and The Incredible Hulk, 2010's Iron Man 2,\nand 2011's Thor and Captain America: The First Avenger |
| 2012 | The Amazing Spider-Man | Marvel Comics | Marc Webb | Columbia Pictures | $752,216,557 | Reboot of the Spider-Man film franchise |
| 2012 | The Dark Knight Rises | DC Comics | Christopher Nolan | Warner Bros. | $1,084,439,099 | Sequel to 2008's The Dark Knight |
| 2012 | Dredd | Rebellion Developments | Pete Travis | Lionsgate | $35,626,525 | Reboot of the Judge Dredd film franchise |
| 2013 | Iron Man 3 | Marvel Comics | Shane Black | Walt Disney Studios Motion Pictures | $1,215,439,994 | Sequel to 2010's Iron Man 2 |
| 2013 | Man of Steel | DC Comics | Zack Snyder | Warner Bros. | $668,045,518 | Reboot of the Superman film franchise |
| 2013 | R.I.P.D. | Dark Horse Comics | Robert Schwentke | Universal Pictures | $78,324,220 |  |
| 2013 | The Wolverine | Marvel Comics | James Mangold | 20th Century Fox | $414,828,246 | Sequel to the X-Men film trilogy |
| 2013 | Kick-Ass 2 | Marvel Comics | Jeff Wadlow | Universal Studios | $59,556,104 | Sequel to 2010's Kick-Ass |
| 2013 | Super Buddies | Original | Robert Vince | Walt Disney Studios Home Entertainment | Direct to Video | 7th installment in the Air Buddies franchise |
| 2013 | Thor: The Dark World | Marvel Comics | Alan Taylor | Walt Disney Studios Motion Pictures | $629,972,697 | Sequel to 2011's Thor |
| 2014 | Captain America: The Winter Soldier | Marvel Comics | Anthony and Joseph Russo | Walt Disney Studios Motion Pictures |  | Sequel to 2011's Captain America: The First Avenger |
| 2014 | The Amazing Spider-Man 2 | Marvel Comics | Marc Webb | Columbia Pictures |  | Sequel to 2012's The Amazing Spider-Man |
| 2014 | X-Men: Days of Future Past | Marvel Comics | Bryan Singer | 20th Century Fox |  | Sequel to 2011's X-Men: First Class and the X-Men film trilogy |
| 2014 | Teenage Mutant Ninja Turtles | Mirage Comics | Jonathan Liebesman | Paramount Pictures |  | Reboot of the Teenage Mutant Ninja Turtles film franchise |
| 2014 | Guardians of the Galaxy | Marvel Comics | James Gunn | Walt Disney Studios Motion Pictures |  |  |
| 2015 | The Fantastic Four | Marvel Comics | Josh Trank | 20th Century Fox |  | Reboot of the Fantastic Four film franchise |
| 2015 | Avengers: Age of Ultron | Marvel Comics | Joss Whedon | Walt Disney Studios Motion Pictures |  | Sequel to 2012's The Avengers |
| 2015 | Ant-Man | Marvel Comics | Edgar Wright | Walt Disney Studios Motion Pictures |  |  |
| 2016 | Third Captain America film | Marvel Comics | Anthony and Joseph Russo | Walt Disney Studios Motion Pictures |  | Sequel to 2014's Captain America: The Winter Soldier |
| 2016 | Untitled Man of Steel sequel | DC Comics | Zack Snyder | Warner Bros. Pictures |  | Crossover team up with Superman, Batman and Wonder Woman; sequel to 2013's Man of Steel; |
| 2016 | X-Men: Apocalypse | Marvel Comics | Bryan Singer | 20th Century Fox |  | Sequel to X-Men: Days of Future Past |
| 2016 | The Amazing Spider-Man 3 | Marvel Comics |  | Columbia Pictures |  | Sequel to 2014's The Amazing Spider-Man 2 |
| 2017 | Untitled The Wolverine Sequel | Marvel Comics |  | 20th Century Fox |  | Sequel to The Wolverine |
| 2017 | Untitled The Fantastic Four Sequel | Marvel Comics |  | 20th Century Fox |  | Sequel to the reboot of the Fantastic Four film franchise |
| 2018 | The Amazing Spider-Man 4 | Marvel Comics |  | Columbia Pictures |  | Sequel to 2016's The Amazing Spider-Man 3 |
Question:
what is the number of live-action american superhero movies released in 1978?
Answer:
3