companion (doctor who)
fourth doctor
Table:
Companion
Actor/Actress
Seasons
First serial
Last serial
Appearances with the Fourth Doctor

Sarah Jane Smith
Elisabeth Sladen
12 – 14
Robot
The Hand of Fear
13 Not including The Five Doctors, where Sarah Jane appears as the Third Doctor's companion.

Harry Sullivan
Ian Marter
12– 13
Robot
Terror of the Zygons Harry also appears in The Android Invasion .
7 (6 as companion)

Leela
Louise Jameson
14– 15
The Face of Evil
The Invasion of Time
9

K-9 Mark I
John Leeson (voice)
15
The Invisible Enemy
The Invasion of Time This first incarnation of K-9 returns in the independent spin-off series K-9 , regenerating into a newer form.
4 Not including Image of the Fendahl , where the K-9 prop appears but has no lines.

K-9 Mark II
John Leeson David Brierley (voices)
16 , 18 17
The Ribos Operation The Creature from the Pit
Warriors' Gate A further model of K-9, "Mark III", features in the pilot of K-9 and Company with Sarah Jane Smith, and Doctor Who episode " School Reunion " with the Tenth Doctor and Sarah Jane. Killed and replaced by K-9 Mark IV in the latter episode, he subsequently appears irregularly in The Sarah Jane Adventures , and also the Doctor Who episode " Journey's End ". The Horns of Nimon
10 3 Not including Destiny of the Daleks , where the K-9 prop briefly appears and has no lines.

Romana
Mary Tamm Lalla Ward
16 17–18, 1983 Special
The Ribos Operation Destiny of the Daleks
The Armageddon Factor The Five Doctors Romana leaves the Doctor in Warriors' Gate, before appearing again as the Fourth Doctor's companion in The Five Doctors (played by Ward).
6 12

Adric
Matthew Waterhouse
18
Full Circle
Logopolis
5

Nyssa
Sarah Sutton
18
The Keeper of Traken
Logopolis
2

Tegan Jovanka
Janet Fielding
18
Logopolis
Logopolis
1

For the table from the article 'companion (doctor who)' (section 'fourth doctor') on Wikipedia, determine which relation holds between the two highlighted columns from the relation options provided: olympics.olympic_athlete.medals_won-olympics.olympic_medal_honor.event, base.schemastaging.athlete_extra.salary-base.schemastaging.athlete_salary.team, film.film.genre, location.country.languages_spoken, organization.organization.headquarters-location.mailing_address.citytown, award.award_nominee.award_nominations-award.award_nomination.nominated_f, tv.tv_actor.starring_roles-tv.regular_tv_appearance.series, time.event.locations, olympics.olympic_athlete.medals_won-olympics.olympic_medal_honor.country, award.award_ceremony.awards_presented-award.award_honor.honored_for, sports.sports_team.league-sports.sports_league_participation.league, film.film.language, film.film_character.portrayed_in_films-film.performance.actor, people.person.places_lived-people.place_lived.location, base.schemastaging.organization_extra.phone_number-base.schemastaging.phone_sandbox.service_location, film.film.starring-film.performance.actor, government.political_district.representatives-government.government_position_held.office_holder, tv.tv_program.regular_cast-tv.regular_tv_appearance.actor, film.actor.film-film.performance.character, government.governmental_jurisdiction.governing_officials-government.government_position_held.office_holder, sports.sports_team.sport, soccer.football_player.statistics-soccer.football_player_stats.team, film.film.country, music.artist.album, ice_hockey.hockey_player.hockey_position, military.military_combatant.military_conflicts-military.military_combatant_group.combatants, book.author.works_written, film.film.production_companies, soccer.football_team.player_statistics-soccer.football_player_stats.player, sports.sports_team.league-sports.sports_league_participation.from, film.actor.film-film.performance.film, film.film.directed_by, baseball.baseball_player.batting_stats-baseball.batting_statistics.team, film.film.distributors-film.film_film_distributor_relationship.distributor, award.award_nominated_work.award_nominations-award.award_nomination.ceremony, basketball.basketball_player.player_statistics-basketball.basketball_player_stats.team, base.wikipedia_infobox.video_game.developer, location.administrative_division.capital-location.administrative_division_capital_relationship.capital, award.award_ceremony.nominees-award.award_nomination.nominated_for, award.award_nominated_work.award_nominations-award.award_nomination.award_nominee, baseball.baseball_team.league, aviation.airline.hubs, book.written_work.author, american_football.football_player.games-american_football.player_game_statistics.team, people.person.place_of_birth, film.director.film, government.politician.party-government.political_party_tenure.party, aviation.airport.serves, education.educational_institution.athletics_brand, organization.organization.headquarters-location.mailing_address.country, film.film.story_by, tv.tv_character.appeared_in_tv_program-tv.regular_tv_appearance.actor, sports.pro_athlete.teams-sports.sports_team_roster.position, american_football.football_player.position_s, meteorology.tropical_cyclone.tropical_cyclone_season, government.politician.government_positions_held-government.government_position_held.district_represented, organization.organization.headquarters-location.mailing_address.state_province_region, location.location.contains, award.award_ceremony.awards_presented-award.award_honor.award_winner, sports.sports_team.roster-sports.sports_team_roster.player, film.film.release_date_s-film.film_regional_release_date.film_release_region, sports.sports_championship_event.champion, film.film.produced_by, soccer.football_player.position_s, time.event.instance_of_recurring_event, film.film.starring-film.performance.character, music.composer.compositions, military.military_person.service-military.military_service.military_force, baseball.baseball_player.position_s, sports.sports_position.players-sports.sports_team_roster.position, people.person.education-education.education.institution, sports.sports_league.teams-sports.sports_league_participation.team, cvg.computer_videogame.developer, location.administrative_division.country, film.film.written_by, sports.sports_team.venue-sports.team_venue_relationship.venue, sports.sports_award_winner.awards-sports.sports_award.team, tv.tv_actor.starring_roles-tv.regular_tv_appearance.character, location.location.nearby_airports, tv.tv_program.country_of_origin, olympics.olympic_participating_country.medals_won-olympics.olympic_medal_honor.medalist, location.capital_of_administrative_division.capital_of-location.administrative_division_capital_relationship.administrative_division, people.person.spouse_s-people.marriage.spouse, tv.tv_network.programs-tv.tv_network_duration.program, people.deceased_person.place_of_death, music.album.artist, base.biblioness.bibs_location.country, people.person.nationality, sports.sports_team.location, location.country.official_language, sports.sports_league_season.league, location.location.street_address-location.mailing_address.citytown, award.award_category.category_of, music.composition.composer, base.aareas.schema.administrative_area.administrative_parent, award.award_category.winners-award.award_honor.award_winner, olympics.olympic_participating_country.athletes-olympics.olympic_athlete_affiliation.athlete, sports.sports_facility.home_venue_for-sports.team_venue_relationship.team, broadcast.broadcast.area_served, sports.sports_team.arena_stadium, award.award_category.nominees-award.award_nomination.award_nominee, award.award_category.winners-award.award_honor.ceremony, film.film.music, award.award_ceremony.nominees-award.award_nomination.award_nominee, sports.sports_position.players-sports.sports_team_roster.player, award.award_winning_work.awards_won-award.award_honor.award_winner, location.country.capital, location.location.containedby, base.wikipedia_infobox.video_game.platforms, olympics.olympic_event_competition.medalists-olympics.olympic_medal_honor.medalist, award.award_category.nominees-award.award_nomination.ceremony, olympics.olympic_athlete.country-olympics.olympic_athlete_affiliation.country, tv.tv_program.original_network-tv.tv_network_duration.network, base.culturalevent.event.entity_involved, cvg.computer_videogame.publisher, people.person.parents, location.hud_county_place.county, sports.pro_athlete.teams-sports.sports_team_roster.team, government.political_party.politicians_in_this_party-government.political_party_tenure.politician, sports.sports_facility.teams. Return the relation name(s) in JSON format {"answer": ["RELATION"]}. Use commas to separate multiple correct relations.

{"answer": ["tv.tv_character.appeared_in_tv_program-tv.regular_tv_appearance.actor"]}