user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: Which airport is closest to the port in the city that hosted the 1992 Summer Olympics? 
Knowledge Triplets: Volleyball at the 1992 Summer Olympics – Men's tournament, time.event.locations, Pavelló de la Vall d'Hebron
m.07ylfb6, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Rowing
Tennis at the 1992 Summer Olympics, common.topic.article, m.07m408
1992 Summer Olympics, olympics.olympic_games.venues, Palau dels Esports de Barcelona
m.04dq7lh, olympics.olympic_athlete_affiliation.olympics, 1992 Summer Olympics
m.07ylfdh, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylf68, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Palau Sant Jordi, location.location.events, Volleyball at the 1992 Summer Olympics – Women's tournament
Women's 10m air rifle, olympics.olympic_event.olympic_games_contested, 1992 Summer Olympics
m.063jcp_, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07qkq5d, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.06qld0t, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldqg, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Palau de la Metal·lúrgia, location.location.events, Fencing at the 1992 Summer Olympics – Men's sabre
1992 Summer Olympics, olympics.olympic_games.sports, Sailing
Pavelló de la Vall d'Hebron, olympics.olympic_venue.olympic_events_contested_here, Volleyball at the 1992 Summer Olympics – Women's tournament
Pavelló de la Vall d'Hebron, olympics.olympic_venue.olympic_events_contested_here, Volleyball at the 1992 Summer Olympics – Men's tournament
m.07ylf18, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.demonstration_sports, Roller hockey
Basketball at the 1992 Summer Olympics, common.topic.article, m.0725t2
m.07ylf2s, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.participating_countries, United States of America
1992 Summer Olympics, olympics.olympic_games.sports, Track cycling
1992 Summer Olympics, olympics.olympic_games.venues, Estadi de la Nova Creu Alta
1992 Summer Olympics, olympics.olympic_games.venues, Palau Sant Jordi
m.07yldwc, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldr0, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Volleyball at the 1992 Summer Olympics – Women's tournament, time.event.locations, Pavelló de la Vall d'Hebron
m.07ylf92, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylf1x, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Water polo
Football at the 1992 Summer Olympics, common.topic.article, m.0brbzr
1992 Summer Olympics, time.event.includes_event, Basketball at the 1992 Summer Olympics
Games of the XXV Olympiad, common.image.appears_in_topic_gallery, 1992 Summer Olympics
Diving at the 1992 Summer Olympics, common.topic.article, m.0f3w29
Palau de la Metal·lúrgia, location.location.events, Fencing at the 1992 Summer Olympics – Men's team épée
m.07yldnt, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.0n9f6nf, olympics.olympic_athlete_affiliation.olympics, 1992 Summer Olympics
m.07jsy93, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Olympic weightlifting
m.07ylf50, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.04dq7q9, olympics.olympic_athlete_affiliation.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Greco-Roman wrestling
m.07yldvr, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Volleyball at the 1992 Summer Olympics – Women's tournament, olympics.olympic_event_competition.venue, Pavelló de la Vall d'Hebron
m.0zfhv2d, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldz0, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.host_city, Barcelona
m.07yldx4, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.demonstration_events, Men's Beach Volleyball
m.07yldzd, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylfch, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylfgx, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldxn, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, time.event.includes_event, Football at the 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.demonstration_events, Women's Beach Volleyball
Palau de la Metal·lúrgia, location.location.events, Fencing at the 1992 Summer Olympics – Men's épée
Palau dels Esports de Barcelona, olympics.olympic_venue.olympic_events_contested_here, Volleyball at the 1992 Summer Olympics – Men's tournament
Volleyball at the 1992 Summer Olympics – Men's tournament, time.event.locations, Palau Sant Jordi
m.04dq0st, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Palau dels Esports de Barcelona, location.location.events, Volleyball at the 1992 Summer Olympics – Men's tournament
Athletics at the 1992 Summer Olympics, common.topic.notable_types, Event
m.07ylf9n, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Palau dels Esports de Barcelona, olympics.olympic_venue.olympic_games_used_in, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Shooting sport
Volleyball at the 1992 Summer Olympics – Women's tournament, time.event.locations, Palau Sant Jordi
m.07yldy4, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylf70, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Boxing
m.07ylfj2, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Palau Sant Jordi, olympics.olympic_venue.olympic_events_contested_here, Volleyball at the 1992 Summer Olympics – Women's tournament
Men's 10m air rifle, olympics.olympic_event.olympic_games_contested, 1992 Summer Olympics
m.06qld0t, olympics.olympic_medal_honor.event, Football at the 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Synchronized swimming
Palau dels Esports de Barcelona, location.location.events, Volleyball at the 1992 Summer Olympics – Women's tournament
m.07ylf5x, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Dressage
1992 Summer Olympics, common.topic.notable_types, Olympic games
Basketball at the 1992 Summer Olympics, common.topic.notable_for, g.1254y3r88
1992 Summer Olympics, time.event.includes_event, Diving at the 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Baseball
1992 Summer Olympics, olympics.olympic_games.sports, Football
Summer Olympic Games, time.recurring_event.instances, 1992 Summer Olympics
m.07yldpc, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Table tennis
m.07yld_j, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Volleyball at the 1992 Summer Olympics – Women's tournament, olympics.olympic_event_competition.venue, Palau dels Esports de Barcelona
m.07ylfh5, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldrj, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, time.event.includes_event, Tennis at the 1992 Summer Olympics
m.07yldys, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.0kglnkf, olympics.olympic_athlete_affiliation.olympics, 1992 Summer Olympics
m.07ylfb_, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yld_4, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Palau Sant Jordi, olympics.olympic_venue.olympic_events_contested_here, Volleyball at the 1992 Summer Olympics – Men's tournament
Football at the 1992 Summer Olympics, olympics.olympic_event_competition.olympic_games_contested, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.demonstration_sports, Beach volleyball
m.07ylffs, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldtg, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Freestyle wrestling
Barcelona, olympics.olympic_host_city.olympics_hosted, 1992 Summer Olympics
United Kingdom, olympics.olympic_participating_country.olympics_participated_in, 1992 Summer Olympics
1992 Summer Olympics, time.event.includes_event, Handball at the 1992 Summer Olympics
Tennis, olympics.olympic_sport.olympic_games_contested, 1992 Summer Olympics
m.07ylds2, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylf34, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, common.topic.article, m.0l6mh
Athletics at the 1992 Summer Olympics, common.topic.notable_for, g.125c2wltg
m.07ylf8j, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Football at the 1992 Summer Olympics, olympics.olympic_event_competition.medalists, m.06qlp21
1992 Summer Olympics, olympics.olympic_games.sports, Fencing
1992 Summer Olympics, olympics.olympic_games.sports, Badminton
m.07ylfgm, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldr8, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Palau de la Metal·lúrgia, location.location.events, Fencing at the 1992 Summer Olympics – Men's foil
Tennis at the 1992 Summer Olympics, time.event.included_in_event, 1992 Summer Olympics
Palau de la Metal·lúrgia, location.location.events, Fencing at the 1992 Summer Olympics – Men's team sabre
m.07ylf9y, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Diving at the 1992 Summer Olympics, time.event.included_in_event, 1992 Summer Olympics
m.051r7b0, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, time.event.instance_of_recurring_event, Summer Olympic Games
Cycling at the 1992 Summer Olympics, common.topic.article, m.0g5xhs
m.07ylfq4, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Palau de la Metal·lúrgia, location.location.events, Fencing at the 1992 Summer Olympics – Men's team foil
m.07ylfjf, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Football at the 1992 Summer Olympics, common.topic.notable_for, g.125f53xcp
Palau Sant Jordi, olympics.olympic_venue.olympic_games_used_in, 1992 Summer Olympics
Palau de la Metal·lúrgia, olympics.olympic_venue.olympic_games_used_in, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.venues, Palau de la Metal·lúrgia
Handball at the 1992 Summer Olympics, common.topic.notable_for, g.1257wxd_k
m.07ylf9c, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Hockey
United States of America, olympics.olympic_participating_country.olympics_participated_in, 1992 Summer Olympics
m.07yldqr, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Palau de la Metal·lúrgia, location.location.events, Fencing at the 1992 Summer Olympics – Women's team foil
Cycling at the 1992 Summer Olympics, common.topic.notable_for, g.1256z4bfz
m.07ylf0x, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Pavelló de la Vall d'Hebron, location.location.events, Volleyball at the 1992 Summer Olympics – Men's tournament
m.0cj5sdt, olympics.olympic_athlete_affiliation.olympics, 1992 Summer Olympics
m.07ylf8t, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldsy, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, time.event.includes_event, Athletics at the 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Roller hockey
m.07ylfkk, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Volleyball at the 1992 Summer Olympics – Women's tournament, olympics.olympic_event_competition.venue, Palau Sant Jordi
Diving at the 1992 Summer Olympics, common.topic.notable_types, Event
1992 Summer Olympics, olympics.olympic_games.sports, Basketball
1992 Summer Olympics, olympics.olympic_games.sports, Artistic gymnastics
Volleyball at the 1992 Summer Olympics – Men's tournament, olympics.olympic_event_competition.venue, Pavelló de la Vall d'Hebron
m.07ylfjq, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldpx, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylf2d, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldq5, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylf44, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Diving at the 1992 Summer Olympics, common.topic.notable_for, g.1259prlvd
1992 Summer Olympics, olympics.olympic_games.sports, Show jumping
Estadi de la Nova Creu Alta, olympics.olympic_venue.olympic_games_used_in, 1992 Summer Olympics
m.07ylfd_, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylf08, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Judo at the 1992 Summer Olympics, common.topic.article, m.098tqg
1992 Summer Olympics, olympics.olympic_games.sports, Track and field athletics
Eventing, olympics.olympic_sport.olympic_games_contested, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Volleyball
m.07yldt5, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldyj, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, time.event.locations, Barcelona
m.07yldsn, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Basketball at the 1992 Summer Olympics - Women's, olympics.olympic_event_competition.olympic_games_contested, 1992 Summer Olympics
Volleyball at the 1992 Summer Olympics – Men's tournament, olympics.olympic_event_competition.venue, Palau Sant Jordi
Football, olympics.olympic_sport.olympic_games_contested, 1992 Summer Olympics
m.07yldsc, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Barcelona, location.location.nearby_airports, Barcelona–El Prat Airport
m.07yldpn, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.06qlp21, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Archery
Sailing, olympics.olympic_sport.olympic_games_contested, 1992 Summer Olympics
m.07qkq5d, olympics.olympic_medal_honor.event, Handball at the 1992 Summer Olympics
Tennis at the 1992 Summer Olympics, common.topic.notable_for, g.125fszdzm
1992 Summer Olympics, olympics.olympic_games.sports, Judo
1992 Summer Olympics, time.event.locations, Barcelona
Baseball, olympics.olympic_sport.olympic_games_contested, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Eventing
m.07yldp2, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Men's 10m air pistol, olympics.olympic_event.olympic_games_contested, 1992 Summer Olympics
m.06qlp21, olympics.olympic_medal_honor.event, Football at the 1992 Summer Olympics
m.07yldw3, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylfl5, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldzs, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylfg1, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, time.event.includes_event, Judo at the 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Road cycling
m.07ylf5j, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Football at the 1992 Summer Olympics, olympics.olympic_event_competition.medalists, m.06qld0t
m.07ylf84, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Modern pentathlon
Cycling at the 1992 Summer Olympics, time.event.included_in_event, 1992 Summer Olympics
Football at the 1992 Summer Olympics, time.event.included_in_event, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.mascot, Cobi
m.07ylf1j, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Palau Sant Jordi, location.location.events, Volleyball at the 1992 Summer Olympics – Men's tournament
1992 Summer Olympics, olympics.olympic_games.sports, Rhythmic gymnastics
1992 Summer Olympics, olympics.olympic_games.participating_countries, United Kingdom
1992 Summer Olympics, olympics.olympic_games.sports, Diving
Women's 10m air pistol, olympics.olympic_event.olympic_games_contested, 1992 Summer Olympics
Volleyball at the 1992 Summer Olympics – Men's tournament, time.event.locations, Palau dels Esports de Barcelona
1992 Summer Olympics, olympics.olympic_games.sports, Tennis
m.07ylf3n, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Handball at the 1992 Summer Olympics, time.event.included_in_event, 1992 Summer Olympics
m.07ylf7s, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.participating_countries, Independent Olympic Participants
m.07ylfht, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldrt, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Athletics at the 1992 Summer Olympics, time.event.included_in_event, 1992 Summer Olympics
m.07ylfhj, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Volleyball at the 1992 Summer Olympics – Women's tournament, time.event.locations, Palau dels Esports de Barcelona
m.051r7b0, olympics.olympic_medal_honor.event, Basketball at the 1992 Summer Olympics
Palau dels Esports de Barcelona, olympics.olympic_venue.olympic_events_contested_here, Volleyball at the 1992 Summer Olympics – Women's tournament
m.07ylfc_, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Palau de la Metal·lúrgia, location.location.events, Fencing at the 1992 Summer Olympics – Women's foil
m.07ylf6n, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Olympic trap, olympics.olympic_event.olympic_games_contested, 1992 Summer Olympics
Pavelló de la Vall d'Hebron, location.location.events, Volleyball at the 1992 Summer Olympics – Women's tournament
Pavelló de la Vall d'Hebron, olympics.olympic_venue.olympic_games_used_in, 1992 Summer Olympics
Volleyball at the 1992 Summer Olympics – Men's tournament, olympics.olympic_event_competition.venue, Palau dels Esports de Barcelona
1992 Summer Olympics, olympics.olympic_games.venues, Pavelló de la Vall d'Hebron
1992 Summer Olympics, olympics.olympic_games.sports, Canoe Slalom
1992 Summer Olympics, time.event.includes_event, Cycling at the 1992 Summer Olympics
m.07yldtr, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Handball at the 1992 Summer Olympics, common.topic.article, m.08sgq1
m.07ylf0n, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Swimming
m.04dq799, olympics.olympic_athlete_affiliation.olympics, 1992 Summer Olympics
m.07yldv7, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Cobi, olympics.olympic_mascot.olympic_games, 1992 Summer Olympics
m.07ylfk8, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, olympics.olympic_games.sports, Handball
1992 Summer Olympics, olympics.olympic_games.sports, Canoe Sprint
1992 Summer Olympics, common.topic.image, Games of the XXV Olympiad
m.07ylfkx, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldwn, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylfgb, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
Basketball at the 1992 Summer Olympics, time.event.included_in_event, 1992 Summer Olympics
m.07ylfpn, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07yldnj, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylf7d, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
m.07ylffh, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics
1992 Summer Olympics, common.topic.notable_for, g.1256psgmg
Athletics at the 1992 Summer Olympics, common.topic.article, m.02q3t_
1992 Summer Olympics, olympics.olympic_games.participating_countries, Unified Team at the Olympics
m.07ylfbh, olympics.olympic_medal_honor.olympics, 1992 Summer Olympics

Answer: Barcelona–El Prat Airport