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: What is the time zone in which the host city for the 1968 Summer Olympics is located? 
Knowledge Triplets: 1968 Summer Olympics, olympics.olympic_games.host_city, Mexico City
1968 Summer Olympics, olympics.olympic_games.athletes, m.04dq7r5
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_games_used_in, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.04dq897
Athletics at the 1968 Summer Olympics – Women's 400 metres, olympics.olympic_event_competition.venue, Estadio Olímpico Universitario
1968 Summer Olympics, olympics.olympic_games.sports, Basketball
athletics at the 1968 Summer Olympics - Men's Pole Vault, time.event.locations, Estadio Olímpico Universitario
1968 Summer Olympics, olympics.olympic_games.sports, Freestyle wrestling
1968 Summer Olympics, olympics.olympic_games.sports, Canoe Sprint
m.0htv7w2, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's long jump
1968 Summer Olympics, olympics.olympic_games.sports, Fencing
1968 Summer Olympics, olympics.olympic_games.athletes, m.04dq85d
athletics at the 1968 Summer Olympics - Men's Pole Vault, olympics.olympic_event_competition.venue, Estadio Olímpico Universitario
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Women's 800 metres
athletics at the 1968 Summer Olympics - Men's Decathlon, olympics.olympic_event_competition.venue, Estadio Olímpico Universitario
1968 Summer Olympics, olympics.olympic_games.athletes, m.04dq7p0
1968 Summer Olympics, olympics.olympic_games.sports, Olympic weightlifting
Mexico City, location.location.time_zones, Central Time Zone
Estadio Olímpico Universitario, location.location.events, athletics at the 1968 Summer Olympics - Men's Pole Vault
Municipal Stadium, olympics.olympic_venue.olympic_games_used_in, 1968 Summer Olympics
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's 400 metres hurdles
m.04dq79j, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
m.04dq85d, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's 3000 metres steeplechase
m.065trz6, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Diving at the 1968 Summer Olympics – Men's 10 metre platform, time.event.included_in_event, Diving at the 1968 Summer Olympics
m.065try6, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, athletics at the 1968 Summer Olympics - Men's Pole Vault
m.04dq7r5, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.0_vcl5y
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Women's 800 metres
1968 Summer Olympics, olympics.olympic_games.athletes, m.0w5fcjg
1968 Summer Olympics, olympics.olympic_games.athletes, m.04dq8qh
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tr_z
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's javelin throw
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Women's long jump
1968 Summer Olympics, common.topic.image, 1968 Mexico emblem
Athletics at the 1968 Summer Olympics – Men's 100 metres, time.event.locations, Estadio Olímpico Universitario
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Women's discus throw
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's high jump
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics - Women's High Jump
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's triple jump
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's shot put
m.0pdp78v, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.0tlz0cy
m.0hz83t1, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Women's 80 metres hurdles
1968 Summer Olympics, olympics.olympic_games.athletes, m.0r9922z
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tr_2
Summer Olympic Games, time.recurring_event.instances, 1968 Summer Olympics
m.04gcs27, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Mexico City, olympics.olympic_host_city.olympics_hosted, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.065trzq
m.065trzb, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's triple jump
1968 Summer Olympics, olympics.olympic_games.sports, Football
Diving at the 1968 Summer Olympics – Men's 3 metre springboard, time.event.included_in_event, Diving at the 1968 Summer Olympics
Estadio Olímpico Universitario, location.location.events, athletics at the 1968 Summer Olympics - Men's Decathlon
1968 Summer Olympics, olympics.olympic_games.athletes, m.0tlyz17
m.065tryv, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Diving at the 1968 Summer Olympics, time.event.includes_event, Diving at the 1968 Summer Olympics – Men's 10 metre platform
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, athletics at the 1968 Summer Olympics - Men's Decathlon
1968 Summer Olympics, olympics.olympic_games.athletes, m.065ts02
Athletics at the 1968 Summer Olympics - Women's High Jump, olympics.olympic_event_competition.venue, Estadio Olímpico Universitario
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's 5000 metres
1968 Summer Olympics, olympics.olympic_games.athletes, m.0pdp78v
1968 Summer Olympics, olympics.olympic_games.athletes, m.0bntxtt
1968 Summer Olympics, time.event.instance_of_recurring_event, Summer Olympic Games
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Women's 100 metres
1968 Summer Olympics, common.topic.notable_types, Olympic games
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's 3000 metres steeplechase
1968 Summer Olympics, olympics.olympic_games.athletes, m.065trzz
m.0bntxpl, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Women's discus throw
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's discus throw
1968 Summer Olympics, olympics.olympic_games.athletes, m.0tlz35t
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tr_b
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's 110 metres hurdles
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's 110 metres hurdles
Athletics at the 1968 Summer Olympics – Men's 100 metres, olympics.olympic_event_competition.venue, Estadio Olímpico Universitario
1968 Summer Olympics, olympics.olympic_games.athletes, m.0_z56t6
m.04dq8rs, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's 1500 metres
1968 Summer Olympics, common.topic.notable_for, g.125cjyp4v
1968 Summer Olympics, olympics.olympic_games.sports, Volleyball
m.065trzq, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.065trz2
Diving at the 1968 Summer Olympics – Women's 10 metre platform, time.event.included_in_event, Diving at the 1968 Summer Olympics
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's 50 kilometres walk
1968 Summer Olympics, olympics.olympic_games.athletes, m.0kh17y7
1968 Summer Olympics, time.event.includes_event, Diving at the 1968 Summer Olympics
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Women's pentathlon
Athletics at the 1968 Summer Olympics – Men's long jump, olympics.olympic_event_competition.venue, Estadio Olímpico Universitario
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tr_v
m.065tryq, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
m.065tryb, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Diving at the 1968 Summer Olympics, time.event.includes_event, Diving at the 1968 Summer Olympics – Women's 3 metre springboard
1968 Summer Olympics, olympics.olympic_games.venues, Estadio Olímpico Universitario
1968 Summer Olympics, olympics.olympic_games.athletes, m.0tlz26y
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tr_q
Salute, film.film.subjects, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.0tlz5v3
1968 Summer Olympics, olympics.olympic_games.athletes, m.05ssg6l
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tr_l
m.04dq7p0, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.sports, Rowing
1968 Summer Olympics, olympics.olympic_games.sports, Modern pentathlon
1968 Summer Olympics, olympics.olympic_games.sports, Boxing
Athletics at the 1968 Summer Olympics – Men's triple jump, olympics.olympic_event_competition.venue, Estadio Olímpico Universitario
1968 Summer Olympics, olympics.olympic_games.athletes, m.04dq79j
1968 Summer Olympics, olympics.olympic_games.athletes, m.0hz83t1
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tryg
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's discus throw
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's shot put
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's 800 metres
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tryl
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Women's long jump
1968 Summer Olympics, olympics.olympic_games.participating_countries, United Kingdom
1968 Summer Olympics, olympics.olympic_games.athletes, m.04gcs27
1968 Summer Olympics, olympics.olympic_games.athletes, m.0qz9mn1
Track Cycling, Men's 1000m Time Trial, olympics.olympic_event.olympic_games_contested, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.0t5zkl_
1968 Summer Olympics, olympics.olympic_games.sports, Greco-Roman wrestling
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Women's shot put
1968 Summer Olympics, olympics.olympic_games.athletes, m.04dq8pf
m.05ssg6l, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
m.04dq8pf, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Women's 200 metres
1968 Summer Olympics, common.topic.article, m.0l99l
m.04dq897, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's 400 metres hurdles
1968 Summer Olympics, olympics.olympic_games.sports, Swimming
Mexico City, location.location.events, 1968 Olympics Black Power salute
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Women's 100 metres
1968 Summer Olympics, film.film_subject.films, Salute
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's 800 metres
1968 Summer Olympics, olympics.olympic_games.sports, Shooting sport
1968 Summer Olympics, olympics.olympic_games.athletes, m.07jsqxh
1968 Summer Olympics, olympics.olympic_games.sports, Show jumping
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's hammer throw
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Women's 400 metres
Athletics at the 1968 Summer Olympics – Men's marathon, time.event.locations, Estadio Olímpico Universitario
United Kingdom, olympics.olympic_participating_country.olympics_participated_in, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.sports, Eventing
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Women's pentathlon
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's long jump
Athletics at the 1968 Summer Olympics – Men's marathon, olympics.olympic_event_competition.venue, Estadio Olímpico Universitario
m.0qz9mn1, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Women's 400 metres
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's 10,000 metres
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's 100 metres
1968 Summer Olympics, olympics.olympic_games.athletes, m.04dq8rs
1968 Summer Olympics, olympics.olympic_games.venues, Municipal Stadium
1968 Summer Olympics, olympics.olympic_games.sports, Sailing
Diving at the 1968 Summer Olympics, time.event.includes_event, Diving at the 1968 Summer Olympics – Men's 3 metre springboard
1968 Summer Olympics, olympics.olympic_games.sports, Road cycling
m.0bntxtt, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Women's javelin throw
m.065tryl, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
m.065ts02, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.sports, Track cycling
1968 Mexico emblem, common.image.appears_in_topic_gallery, 1968 Summer Olympics
m.04dq7pg, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tryz
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's 100 metres
m.05t2y7j, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Athletics at the 1968 Summer Olympics – Men's triple jump, time.event.locations, Estadio Olímpico Universitario
m.04dq8qh, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tryb
1968 Summer Olympics, olympics.olympic_games.athletes, m.065trzg
1968 Summer Olympics, olympics.olympic_games.sports, Diving
Mexico City, location.location.events, Cycling at the 1968 Summer Olympics – Men's individual road race
1968 Summer Olympics, olympics.olympic_games.athletes, m.04dq7pg
m.065trz2, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Athletics at the 1968 Summer Olympics – Men's 10,000 metres, olympics.olympic_event_competition.venue, Estadio Olímpico Universitario
1968 Summer Olympics, olympics.olympic_games.sports, Water polo
Diving at the Summer Olympics, time.recurring_event.instances, Diving at the 1968 Summer Olympics
m.065tryz, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's marathon
1968 Summer Olympics, olympics.olympic_games.sports, Hockey
Diving at the 1968 Summer Olympics, time.event.included_in_event, 1968 Summer Olympics
Diving at the 1968 Summer Olympics, time.event.includes_event, Diving at the 1968 Summer Olympics – Women's 10 metre platform
Athletics at the 1968 Summer Olympics - Women's High Jump, time.event.locations, Estadio Olímpico Universitario
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's hammer throw
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Women's javelin throw
1968 Summer Olympics, olympics.olympic_games.athletes, m.065try6
m.0kh17y7, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's 1500 metres
1968 Summer Olympics, olympics.olympic_games.sports, Track and field athletics
1968 Summer Olympics, olympics.olympic_games.athletes, m.0htv7w2
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tr_g
m.0tlz26y, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
1968 Olympics Black Power salute, time.event.locations, Mexico City
Mexico City, location.location.events, Cycling at the 1968 Summer Olympics – Men's team time trial
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Women's shot put
1968 Summer Olympics, olympics.olympic_games.sports, Artistic gymnastics
Diving at the 1968 Summer Olympics – Women's 3 metre springboard, time.event.included_in_event, Diving at the 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.host_city, Mexico City
Diving at the 1968 Summer Olympics, common.topic.article, m.026qm92
m.065tryg, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.0bntxpl
1968 Summer Olympics, olympics.olympic_games.athletes, m.05t2y7j
Municipal Stadium, olympics.olympic_venue.olympic_events_contested_here, Field hockey at the 1968 Summer Olympics
Mexico City, location.location.events, 1968 Summer Olympics
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's high jump
1968 Summer Olympics, olympics.olympic_games.athletes, m.065trzv
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's marathon
m.07jsqxh, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Athletics at the 1968 Summer Olympics – Men's 10,000 metres, time.event.locations, Estadio Olímpico Universitario
athletics at the 1968 Summer Olympics - Men's Decathlon, time.event.locations, Estadio Olímpico Universitario
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tryv
m.04dq8q1, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tr_6
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Women's 80 metres hurdles
Diving at the 1968 Summer Olympics, time.event.instance_of_recurring_event, Diving at the Summer Olympics
m.0r9922z, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.04dq8q1
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's 10,000 metres
1968 Summer Olympics, time.event.locations, Mexico City
m.065trzl, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
m.065trzv, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
1968 Summer Olympics, olympics.olympic_games.athletes, m.065trz6
1968 Summer Olympics, olympics.olympic_games.athletes, m.065trzb
1968 Summer Olympics, olympics.olympic_games.sports, Dressage
Athletics at the 1968 Summer Olympics – Women's 400 metres, time.event.locations, Estadio Olímpico Universitario
1968 Summer Olympics, olympics.olympic_games.athletes, m.065tryq
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Women's 200 metres
Athletics at the 1968 Summer Olympics – Men's long jump, time.event.locations, Estadio Olímpico Universitario
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's 50 kilometres walk
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics - Women's High Jump
Estadio Olímpico Universitario, olympics.olympic_venue.olympic_events_contested_here, Athletics at the 1968 Summer Olympics – Men's javelin throw
1968 Summer Olympics, olympics.olympic_games.athletes, m.065trzl
m.065trzz, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
m.065trzg, olympics.olympic_athlete_affiliation.olympics, 1968 Summer Olympics
Estadio Olímpico Universitario, location.location.events, Athletics at the 1968 Summer Olympics – Men's 5000 metres

Answer: Central Time Zone