2011 oakland athletics season
coaching changes
Table:
Coach

Former

Since

New

Former Position

Bench

Tye Waller

2009

Joel Skinner

Managed AA-Akron Aeros (CLE)

Bullpen

Ron Romanick

2008

Rick Rodriguez

Pitching coach for Sacramento

Hitting

Jim Skaalen

2009

Gerald Perry

Hitting coach for AAA-Pawtucket Red Sox (BOS)

Pitching

Curt Young

2004

Ron Romanick

3 seasons as Athletics' bullpen coach

1st Base

Todd Steverson

2009

Tye Waller

2 seasons as Athletics' bench coach

Considering the table from the Wikipedia page '2011 oakland athletics season' - "coaching changes" section, determine the column type(s) that best describe the highlighted column given the following type options: metropolitan_transit.transit_system, amusement_parks.park, ice_hockey.hockey_position, medicine.disease, astronomy.celestial_object, cricket.cricket_stadium, american_football.football_team, ice_hockey.hockey_team, military.armed_force, government.u_s_congressperson, music.instrument, location.australian_state, film.film_character, american_football.football_player, location.province, computer.computer, government.general_election, award.award_category, broadcast.tv_channel, location.region, soccer.football_player, music.media_format, sports.sports_position, location.location, celebrities.celebrity, music.musical_scale, sports.school_sports_team, baseball.baseball_league, music.composition, book.written_work, film.writer, sports.tournament_event_competition, metropolitan_transit.transit_stop, sports.sports_league, education.university, automotive.model, astronomy.astronomical_discovery, book.periodical_publisher, government.political_party, soccer.football_team, cvg.cvg_genre, baseball.baseball_team, military.military_unit, cvg.computer_videogame, music.group_member, location.in_state, business.consumer_product, olympics.olympic_games, music.genre, rail.locomotive_class, geography.body_of_water, sports.sports_league_season, biology.organism_classification, music.composer, government.politician, sports.multi_event_tournament, theater.play, sports.pro_athlete, broadcast.artist, business.consumer_company, book.newspaper, sports.sports_award_type, organization.membership_organization, sports.professional_sports_team, film.production_company, medicine.medical_treatment, cricket.cricket_team, chemistry.chemical_element, architecture.structure, automotive.company, music.record_label, american_football.football_coach, theater.theater_actor, metropolitan_transit.transit_line, geography.river, soccer.football_team_manager, tv.tv_program, tv.tv_producer, chess.chess_player, tennis.tennis_player, religion.religion, tv.tv_network, exhibitions.exhibition_sponsor, aviation.airport, basketball.basketball_team, amusement_parks.ride, internet.website, location.uk_statistical_location, location.australian_local_government_area, baseball.baseball_position, comic_books.comic_book_character, spaceflight.astronaut, basketball.basketball_conference, people.family_member, sports.sport, tv.tv_actor, tv.tv_series_season, location.citytown, aviation.aircraft_model, location.capital_of_administrative_division, biology.animal, award.award_ceremony, meteorology.tropical_cyclone, government.us_president, aviation.aircraft_owner, royalty.noble_title, education.fraternity_sorority, medicine.drug_ingredient, royalty.noble_person, martial_arts.martial_artist, business.product_category, finance.currency, film.film_festival_focus, geography.island, tv.tv_personality, award.award, music.performance_role, education.school, business.defunct_company, aviation.airline, architecture.building, sports.sports_championship, film.film, broadcast.radio_format, biology.organism, award.award_presenting_organization, astronomy.orbital_relationship, tv.tv_series_episode, film.producer, music.lyricist, internet.website_owner, computer.software, people.ethnicity, medicine.drug, food.food, military.military_person, film.director, american_football.football_conference, cvg.cvg_platform, soccer.football_position, film.actor, language.human_language, tennis.tennis_tournament, computer.operating_system, astronomy.constellation, music.artist, broadcast.broadcast, people.person, medicine.anatomical_structure, location.country, book.periodical, sports.cyclist, sports.sports_team, tv.tv_writer, tv.tv_genre, government.election, book.author, tv.tv_director, sports.sports_league_draft, boats.ship, sports.sports_facility, award.recurring_competition, olympics.olympic_event_competition, cvg.cvg_publisher, broadcast.genre, soccer.fifa, government.government_office_or_title, government.governmental_body, business.industry, film.film_genre, location.hud_county_place, media_common.media_genre, fictional_universe.fictional_organization, music.writer, tv.tv_program_creator, soccer.football_award, tennis.tennis_tournament_champion, sports.boxer, medicine.muscle, religion.religious_leader, business.brand, sports.sports_award_winner, visual_art.visual_artist, travel.accommodation, architecture.venue, astronomy.star_system_body, cvg.cvg_developer, law.court, location.jp_prefecture, award.hall_of_fame_inductee, government.election_campaign, cricket.cricket_bowler, music.musical_group, fictional_universe.fictional_character, baseball.baseball_player, boats.ship_type, law.legal_case, sports.golfer, education.educational_institution, location.administrative_division, ice_hockey.hockey_player, boats.ship_class, government.legislative_session, music.producer, location.us_county, location.uk_constituent_country, computer.software_license, royalty.monarch, basketball.basketball_player, chemistry.chemical_compound, royalty.chivalric_order_member, business.customer, royalty.kingdom, basketball.basketball_coach, architecture.architectural_structure_owner, protected_sites.listed_site, organization.organization, location.us_state, geography.mountain, broadcast.radio_station, military.military_post, interests.collection_category, soccer.football_league, time.recurring_event, tv.tv_character, award.competition, music.album, broadcast.tv_station, organization.non_profit_organization, music.music_video_director, book.book, film.music_contributor, business.job_title, basketball.basketball_position, book.periodical_subject, education.educational_degree, education.field_of_study, soccer.football_league_season, business.business_operation, military.military_conflict, time.event, soccer.football_world_cup, law.invention, award.award_discipline, location.in_district, film.film_distributor, meteorology.tropical_cyclone_season, education.athletics_brand, government.government_agency, sports.sports_championship_event, transportation.road, book.magazine, military.rank, astronomy.asteroid, cricket.cricket_player. Output just the chosen type(s) (comma-separate multiple values) inside the list of {"answer": ["ANSWER"]}.

{"answer": ["sports.pro_athlete", "baseball.baseball_player", "people.person"]}