Given the task definition and input, reply with output. In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).

Context: Erik Gustaf `` Berka '' Bergqvist ( 20 June 1891 -- 17 February 1954 ) was a Swedish water polo player and freestyle swimmer who competed in the 1912 and 1920 Summer Olympics ; he was part of the Swedish water polo teams that won silver and bronze medals , respectively . In 1912 he also competed in the 100 m freestyle . Besides water sports , Bergqvist won a Swedish football title with AIK . He was one of three founders of the company AB Tipstjänst , which in 1934 received the state license to organize gambling and betting in sport , as those were going out of control in the 1920s -- 30s . The company was nationalized in 1943 , and Bergqvist was offered the post of its Director General , on condition that he joins the Swedish Social Democratic Party . He refused , and was appointed as inspector general instead ., In many team sports which involve scoring goals, the goalkeeper (termed goaltender, netminder, goalie, or keeper in some sports) is a designated player charged with directly preventing the opposing team from scoring by intercepting shots at goal. Such positions exist in hurling, association football, Gaelic football, international rules football, handball, field hockey, ice hockey, water polo, bandy, rink bandy, lacrosse, floorball, and other sports., Water polo is a team water sport. The game consists of four quarters in which the two teams attempt to score goals by throwing the ball into their opponent's goal. The team with the most goals at the end of the game wins the match. A team consists of 6 field players and one goalkeeper in the water at any one time. Except for the goalkeeper, players participate in both offensive and defensive roles. In addition to this, teams may have substitute field players and substitute goalkeepers who are not in the water. Water polo is typically played in an all-deep pool 7 feet deep and players require stamina and endurance to play the game., Subject: erik bergqvist, Relation: position_played_on_team_/_speciality, Options: (A) end (B) goalkeeper
goalkeeper