Question: The games sports comprise all the sports in  what contest that happens every four years, that softball returned to after last being competed in 2003 at the Pan Am Ball Park, in Ajax, Ontario?

Context paragraphs:
Antisemitism in the Olympic Games: The modern Olympic Games or Olympics (French: "Jeux olympiques" ), are leading international sporting events featuring summer and winter sports competitions in which thousands of athletes from around the world participate in a variety of competitions.  The Olympic Games are considered the world's foremost sports competition with more than 200 nations participating.  The Olympic Games are held every four years, with the Summer and Winter Games alternating by occurring every four years but two years apart.  In the Olympic games during the years, although its approach of "peace through sport", there have been many anti-Semitic occasions which brought the politics into the sports field, and at least in 1972 – ended in the death of eleven Israeli athletes.

World Games sports: The World Games sports comprise all the sports contested in The World Games.

Commonwealth Games sports: The Commonwealth Games sports comprise all the sports officially recognised and approved by the Commonwealth Games Federation (CGF).  There are a total of 31 approved sports, two multi-disciplinary sports, and a further 7 para-sports.  Not all sports are competed at each edition of the Games as programmes must be limited to a maximum of 17 sports and a maximum 15 para-sports events.

Rink Hockey American Cup: The Rink Hockey American Championship or CSP Copa America is a Rink Hockey competition with the national teams of American countries that happens every four years.  It is organized by "CSP", "South American Federation of Rink Hockey".

Baseball at the 2015 Pan American Games: Baseball competitions at the 2015 Pan American Games in Toronto was held from July 11 to 26 at the Pan Am Ball Park, in Ajax, Ontario.  Women's baseball made be making its Pan American Games debut, after being added to the program at the 2013 Pan American Sports Organization's general assembly.  A total of seven men's and five women's teams competed in each tournament respectively.

Softball at the 2015 Pan American Games: Softball competitions at the 2015 Pan American Games in Toronto was held from July 12 to 26 at the Pan Am Ball Park, in Ajax, Ontario.  Men's softball returned to the Pan American Games sports program after last being competed in 2003.  A total of six men and women's teams competed in each tournament respectively.

Crescent City Base Ball Park: Crescent City Base Ball Park, originally known as Sportsman's Park (1886–1887), was a sports stadium in New Orleans from 1886 to 1900.  The stadium was renamed Crescent City Base Ball Park in 1888 and reopened on February 9, 1888.  The ball park was located at City Park Avenue and what is now the Pontchartrain Expressway across from Greenwood Cemetery.

Women's Softball World Championship: The Women's Softball World Championship is a fastpitch softball tournament for women's national teams held historically every four years, now every two years, by the World Baseball Softball Confederation (WBSC).  The tournament, originally known as the ISF Women's World Championship, was sanctioned by the International Softball Federation (ISF) until that body's 2013 merger with the International Baseball Federation to create the WBSC.  The number of teams in the tournament began at five in its inaugural event in 1965, went to a high of 28 for the 1994 edition, and now the WBSC Code legislates that the maximum number of teams that may participate is 16.  There are qualifying tournaments that determine which countries will play at the World Championship.

Men's Softball World Championship: The Men's Softball World Championship, known through 2013 as the ISF Men's World Championship, is a softball tournament for the best national men's teams in the world.  Held every four years, first by the International Softball Federation (ISF) through 2013 and now by the World Baseball Softball Confederation (WBSC), the 16 best teams in the world compete.  From 2013 the event is held every second year.

Pan American Games sports: The Pan American Games sports comprise all the sports contested in the Summer Olympic Games.  In addition, traditional and popular sports throughout the Americas which are not contested at the Olympic Games are also contested such as bowling and baseball.  As of 2015, the Pan American Games included 36 sports with 51 disciplines and 364 events.  The number and kinds of events may change slightly from one Pan American Games to another.

Supporting paragraphs: Softball at the 2015 Pan American Games Pan American Games sports
Answer: Summer Olympic Games