Question: Eejanaika is a steel 4th Dimension roller coaster at an amusement park that was opened on March 2nd of what year?

Context paragraphs:
Eejanaika (roller coaster): Eejanaika (ええじゃないか ) is a steel 4th Dimension roller coaster at Fuji-Q Highland in Fujiyoshida, Yamanashi, Japan.  The ride is the world's second 4th Dimension coaster.  Eejanaika is the taller, faster, and longer of the two.

List of Kings Island attractions: Kings Island is a 364 acre theme park located in Mason, Ohio, 24 mi northeast of Cincinnati.  Since the opening of the amusement park in 1972, at least one attraction has been added every year except 1978, 1980, 1983, and 2008.  The park is known to have attractions such as Flight of Fear which was the world's first linear induction motor launched roller coaster, and The Beast which has held the record for the world's longest wooden roller coaster since its opening in 1979.  Also, The Beast continues to be ranked as one of the best wooden roller coasters in the world by industry polls.  Kings Island's newest attraction is Mystic Timbers, a wooden roller coaster manufactured by Great Coasters International.  With this addition, Kings Island claimed the record for most wooden roller coaster track of any amusement park in the world, and tied the record for most wooden roller coasters, with five.

X2 (roller coaster): X2 (formerly known as X) is a steel roller coaster operating at Six Flags Magic Mountain in Valencia, California.  It is the world's first 4th Dimension roller coaster and was the final roller coaster conceived and installed by ride manufacturer Arrow Dynamics.  The ride is unique in that the trains' seats pitch 360 degrees forwards and in reverse independent of the main chassis.  The coaster initially opened to the public on January 12, 2002; numerous malfunctions delayed it from debuting in 2001 as was originally anticipated.  On December 2, 2007, the ride closed for its transformation into X2.  It was completely repainted, received new third generation vehicles, and featured new special effects including a sound system and a pair of flame throwers.  The ride reopened on May 24, 2008, following the upgrades.

Tatsu: Tatsu is a steel flying roller coaster designed by Bolliger & Mabillard at the Six Flags Magic Mountain amusement park located in Valencia, California, United States.  Announced on November 17, 2005, the roller coaster opened to the public on May 13, 2006 as the park's seventeenth roller coaster.  Tatsu reaches a height of 170 ft and speeds up to 62 mph .  The ride's name means "Flying Beast" in Japanese.  The roller coaster is also the world's tallest and fastest flying coaster; is the only flying roller coaster to feature a zero-gravity roll; and has the world's highest pretzel loop.  It was the world's longest flying coaster until The Flying Dinosaur surpassed it.

Griffon (roller coaster): Griffon is a steel Dive Coaster roller coaster located at the Busch Gardens Williamsburg amusement park in James City County, Virginia, United States.  Designed by Bolliger & Mabillard, it is 205 ft high, and is the second-fastest (71 mph ) Dive Coaster built.  The roller coaster features two Immelmann loops, a splashdown, two vertical drops and was the first of its kind to use floorless trains.  Griffon was announced to the public on August 23, 2006 and opened on May 18, 2007 to positive reviews by both newspapers and enthusiasts.  In 2007, "Amusement Today"' s annual Golden Ticket Awards voted it the third-best new steel roller coaster of that year and the 27th-best steel roller coaster.  It was voted the 33rd-best steel roller coaster in 2013.

Alan Schilke: Alan Schilke is an engineer and roller coaster designer based in Hayden, Idaho, United States.  He first made his mark on the industry by designing the 4th Dimension roller coaster, X, while working with Arrow Dynamics.  Schilke now works as a Design Engineer at Ride Centerline LLC.

4th Dimension roller coaster: A 4th Dimension Roller Coaster is a type of steel roller coaster whereby riders are rotated independently of the orientation of the track, generally about a horizontal axis that is perpendicular to the track.  The cars do not necessarily need to be fixed to an angle.

Millennium Force: Millennium Force is a steel roller coaster built by Intamin at Cedar Point amusement park in Sandusky, Ohio, United States.  It was the fourteenth roller coaster to be built at the park since Blue Streak opened in 1964.  Upon completion in 2000, Millennium Force broke six world records and was the world's first Giga Coaster, a roller coaster that exceeds 300 ft in height and completes a full circuit.  It was briefly the tallest and fastest in the world until Steel Dragon 2000 opened later the same year.  The ride is also the third-longest roller coaster in North America after The Beast at Kings Island and Fury 325 at Carowinds.  It was the first roller coaster to use a cable lift system rather than a traditional chain lift.  The coaster has a 310 ft , 45-degree lift hill with a 300 ft drop and features two tunnels, three overbanked turns, and four hills.  It has a top speed of 93 mph .

Goliath (Six Flags Over Georgia): Goliath is a steel Hyper Coaster located at the Six Flags Over Georgia amusement park in Cobb County, Georgia, United States.  Designed by Bolliger & Mabillard it reaches a maximum height of 200 ft , a top speed of 70 mi/h , and has approximately 4480 ft of track.  Great Gasp and Looping Starship were both removed by the end of the 2005 season to make room for the roller coaster.  Goliath was announced to the public on September 1, 2005 and opened on April 1, 2006.  In 2006, "Amusement Today"' s annual Golden Ticket Awards voted it the fourth-best new steel roller coaster of that year and the 9th-best steel roller coaster.  It was voted the 7th-best steel roller coaster in 2013.

Fuji-Q Highland: Fuji-Q Highland (富士急ハイランド , Fujikyū Hairando ) is an amusement park in Fujiyoshida, Yamanashi, Japan.  it was opened on 2 March 1968.

Supporting paragraphs: Eejanaika (roller coaster) Fuji-Q Highland
Answer: 1968