Question: The Genève-Servette HC competes in a league know by what name prior to the 2017-2018 season?

Context paragraphs:
Goran Bezina: Goran Bezina (born 21 March 1980 in Split, SR Croatia, Yugoslavia) is a Swiss professional ice hockey defenseman who is currently playing for Genève-Servette HC of the National League (NL).  He previously played for the Arizona Coyotes in the National Hockey League (NHL), Medveščak Zagreb of the Kontinental Hockey League (KHL) and HC Fribourg-Gottéron.

Genève-Servette HC: The Genève-Servette HC (also called "Servette" or "GSHC") is a professional ice hockey club based in Geneva, Switzerland and competing in the National League, the top tier of the Swiss hockey league system.  The team plays their home games at the Patinoire des Vernets, which has a seating capacity of 7,135.  During the 2015-16 regular season, the GSHC was the fourth most attended team in Switzerland, averaging 6,556 spectators.

Jim Slater (ice hockey): James Parker Slater (born December 9, 1982) is an American professional ice hockey center who is currently playing for HC Fribourg-Gottéron of the National League (NL).  He previously played for Genève-Servette HC.  His father, Bill Slater, was a defensive lineman in the NFL for the Minnesota Vikings and the New England Patriots.  He spent his entire NHL career with the Winnipeg Jets/Atlanta Thrashers organization.

Mike Vermeille: Mike Vermeille (born April 5, 1992) is a Swiss ice hockey defenceman.  He is currently playing with HC Sion-Nendaz 4 Vallées of the Swiss MySports League.  Vermeille made his European Elite debut during the 2010–11 season playing in the National League A with the Genève-Servette HC.

Kevin Romy: Kevin Romy (born 31 January 1985) is a Swiss professional ice hockey centre who currently serves as captain of Genève-Servette HC of the National League (NL).  He previously played for HC La Chaux-de-Fonds and HC Lugano.  Romy was drafted by the Philadelphia Flyers in the 4th round (108th overall) in the 2003 NHL Entry Draft.  Romy also represented Switzerland at the 2014 Winter Olympics.

Eliot Antonietti: Eliot Antonietti (born January 27, 1993) is a Swiss professional ice hockey defenceman who currently plays with HC Ajoie of the Swiss League (SL) while under contract with Genève-Servette HC of the National League (NL).

Snooker world ranking points 2017/2018: The official 2017/2018 snooker world ranking points for the professional snooker players on the World Snooker Main Tour in the 2017/2018 season are based on performances in ranking and minor-ranking tournaments over a two-year rolling period.  The rankings at the start of 2017/2018 season are determined by prize money earned in the 2015/2016 and 2016/2017 seasons and are updated after every tournament carrying ranking status.  As points are accrued from tournaments throughout the current season, the points from the corresponding tournaments from two seasons earlier are dropped.  The rankings set the official seedings at the start of the season and at various further stages.  The total points accumulated by the cut-off dates for the revised seedings are based on all the points up to that date in the 2017/2018 season, all of the points from the 2016/2017 season, and the points from the 2015/2016 season that have not yet been dropped.  Note that the table below gives just those rankings that are used for seeding tournaments.  Other rankings are produced after each ranking event which are not noted here.  The total points from the 2016/2017 and 2017/2018 seasons set the rankings at the start of the 2018/2019 season.

Henrik Tömmernes: Joakim Henrik Tömmernes (born 28 August 1990) is a Swedish professional ice hockey defenceman who currently plays for and is an alternate captain of Genève-Servette HC of the National League (NL).  He was drafted by the Vancouver Canucks in the seventh-round, 210th overall, of the 2011 National Hockey League Entry Draft.  Tömmernes played four seasons with Frölunda HC in the Elitserien before moving to North America to join the Canucks minor league affiliate in Utica.

National League (ice hockey): The National League (NL) is a professional ice hockey league in Switzerland.  It is the top tier of the Swiss hockey league system and of the two-tier National League.  Prior to the 2017–18 season, the league was officially called National League A.

Benjamin Antonietti: Benjamin Antonietti (born July 7, 1991) is a Swiss professional ice hockey player who is currently playing with the Dragons de Rouen of the French Ligue Magnus.  He previously played in the National League (NL) with Genève-Servette HC and Lausanne HC.

Supporting paragraphs: Genève-Servette HC National League (ice hockey)
Answer: National League A.