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 political system in the place that contains an airport that serves Duisburg? 
Knowledge Triplets: Duisburger Filmwoche, time.recurring_event.instances, 2009 Duisburger Filmwoche
Duisburg, location.location.nearby_airports, Weeze Airport
University of Duisburg, education.educational_institution.campuses, University of Duisburg
University of Duisburg-Essen, education.educational_institution.phone_number, m.0h7cl0p
University of Duisburg-Essen, education.educational_institution.colors, Blue
University of Duisburg-Essen, organization.organization.headquarters, m.0w_8htk
m.0n1k95d, education.education.institution, University of Duisburg-Essen
2001 Duisburger Filmwoche, time.event.locations, Duisburg
Theater Duisburg, common.topic.image, Duisburg Oper Theater 2009 03 13
1987 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburg, location.location.events, 1988 Duisburger Filmwoche
1991 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
m.0_k_0pj, education.education.institution, University of Duisburg-Essen
Duisburg, location.location.events, 1993 Duisburger Filmwoche
m.01283902, education.education.institution, University of Duisburg-Essen
Duisburger Filmwoche, time.recurring_event.instances, 2010 Duisburger Filmwoche
1997 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
Duisburg, common.topic.notable_for, g.125723_d2
University of Duisburg, location.location.containedby, Germany
Duisburger Filmwoche, time.recurring_event.instances, 2007 Duisburger Filmwoche
m.0svv9n3, education.education.institution, University of Duisburg-Essen
Duisburg, location.location.events, 1991 Duisburger Filmwoche
University of Duisburg-Essen, common.topic.webpage, m.03lfhzz
University of Duisburg-Essen, common.topic.image, Uni Duisburg
Duisburg, location.location.contains, Steinbruch
1992 Duisburger Filmwoche, time.event.locations, Duisburg
1991 Duisburger Filmwoche, time.event.locations, Duisburg
University of Duisburg-Essen, education.educational_institution.students_graduates, m.01283902
Duisburg Inner Harbour, common.topic.notable_for, g.1yljtfj3d
m.05yxvrp, base.disaster2.attack_process.attack_event, Bombing of Duisburg in World War II
Duisburg, location.location.events, 1981 Duisburger Filmwoche
1993 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
2014 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
University of Duisburg, education.educational_institution.students_graduates, m.0wj0tt5
Duisburger Filmwoche, time.recurring_event.instances, 1988 Duisburger Filmwoche
1995 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
University of Duisburg-Essen, education.educational_institution.students_graduates, m.0_k_0pj
Coat of arms of Duisburg, common.image.appears_in_topic_gallery, Duisburg
Bombing of Duisburg in World War II, base.disaster2.attack.attack, m.05yxvrp
1978 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
Duisburg, location.location.events, 1999 Duisburger Filmwoche
University of Duisburg, common.topic.article, m.0cfw23
2003 Duisburger Filmwoche, time.event.locations, Duisburg
1986 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
1982 Duisburger Filmwoche, common.topic.notable_for, g.1q67p8tkp
Duisburg, base.aareas.schema.administrative_area.administrative_area_type, German urban district
1992 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
University of Duisburg-Essen, location.location.containedby, Germany
Duisburg, common.topic.notable_types, German city
Duisburg, location.location.events, 1995 Duisburger Filmwoche
Duisburger Filmwoche, time.recurring_event.instances, 1994 Duisburger Filmwoche
Duisburg, location.location.events, 1987 Duisburger Filmwoche
Duisburg, location.location.adjoin_s, m.0h4s5r6
m.0w5mr8g, education.education.institution, University of Duisburg-Essen
m.0wj0tt5, education.education.institution, University of Duisburg
Duisburg, location.location.events, 2011 Duisburger Filmwoche
University of Duisburg-Essen, location.location.containedby, Düsseldorf
1993 Duisburger Filmwoche, time.event.locations, Duisburg
University of Duisburg-Essen, organization.organization.leadership, m.0h76rwd
Duisburg, location.location.events, 2010 Duisburger Filmwoche
1988 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
Germany, location.country.form_of_government, Representative democracy
1978 Duisburger Filmwoche, time.event.locations, Duisburg
University of Duisburg-Essen, education.educational_institution.total_enrollment, m.0ng7s5z
Duisburger Filmwoche, time.recurring_event.instances, 2006 Duisburger Filmwoche
University of Duisburg-Essen, common.topic.notable_types, College/University
University of Duisburg-Essen, education.educational_institution.campuses, University of Duisburg-Essen
2006 Duisburger Filmwoche, time.event.locations, Duisburg
1979 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
Schwanentor Bridge, common.image.appears_in_topic_gallery, Duisburg
University of Duisburg-Essen, base.jewlib.parent_institution.jewish_studies_research_units, Salomon Ludwig Steinheim Institute of German-Jewish Studies
Bombing of Duisburg in World War II, common.topic.notable_for, g.125dtc152
Duisburg, location.location.events, 2003 Duisburger Filmwoche
Duisburg, location.location.events, Love Parade 2010
1984 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
1998 Duisburger Filmwoche, common.topic.notable_for, g.1q67csv0h
Duisburg Inner Harbour, location.location.containedby, Germany
University of Duisburg, education.educational_institution.students_graduates, m.0svv2kv
m.0wkhz3g, education.education.institution, University of Duisburg
Duisburg Inner Harbour, location.location.geolocation, m.0zn6ypc
2002 Duisburger Filmwoche, time.event.locations, Duisburg
1985 Duisburger Filmwoche, common.topic.notable_for, g.1q67p47wb
1990 Duisburger Filmwoche, common.topic.notable_for, g.1q67d1gvy
University of Duisburg-Essen, education.educational_institution.subsidiary_or_constituent_schools, Mercator School of Management
m.0gz492y, education.education.institution, University of Duisburg-Essen
Duisburger Filmwoche, time.recurring_event.instances, 1981 Duisburger Filmwoche
Duisburg, common.topic.image, Duisburg's inner harbour.
1980 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
University of Duisburg, education.educational_institution.students_graduates, m.0wkhz3g
University of Duisburg, education.educational_institution.students_graduates, m.0whx0l1
University of Duisburg-Essen, organization.organization.headquarters, m.0wl13vb
Köln Stranger Than Fiction Documentary Film Festival, film.film_festival.location, Duisburg
1993 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
University of Duisburg-Essen, common.topic.image, Uni-DuE Essen28
2005 Duisburger Filmwoche, common.topic.notable_for, g.1q678fhn4
1983 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
1983 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
University of Duisburg-Essen, education.educational_institution.students_graduates, m.0gz492y
Duisburger Filmwoche, time.recurring_event.instances, 2014 Duisburger Filmwoche
2005 Duisburger Filmwoche, time.event.locations, Duisburg
Theater Duisburg, common.topic.article, m.0fqrb5
Bombing of Duisburg in World War II, common.topic.image, m.02gtnyn
Duisburg, location.location.events, 2012 Duisburger Filmwoche
Bombing of Duisburg in World War II, time.event.locations, Duisburg
1985 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
Düsseldorf, location.location.contains, Duisburg
2010 Duisburger Filmwoche, time.event.locations, Duisburg
Strategic bombing during World War II, time.event.includes_event, Bombing of Duisburg in World War II
San Luca feud, time.event.locations, Duisburg
Duisburg, location.location.events, 2002 Duisburger Filmwoche
1981 Duisburger Filmwoche, time.event.locations, Duisburg
2009 Duisburger Filmwoche, common.topic.notable_types, Film festival event
Duisburger Filmwoche, time.recurring_event.instances, 2004 Duisburger Filmwoche
1980 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
m.0cx88nn, common.webpage.topic, University of Duisburg
Duisburger Filmwoche, time.recurring_event.instances, 2012 Duisburger Filmwoche
1998 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburger Filmwoche, time.recurring_event.instances, 2001 Duisburger Filmwoche
Duisburg, location.location.containedby, North Rhine-Westphalia
m.02gtnyn, common.image.appears_in_topic_gallery, Bombing of Duisburg in World War II
Operation Hurricane, time.event.locations, Duisburg
University of Duisburg-Essen, education.university.number_of_postgraduates, m.0h76rvz
1980 Duisburger Filmwoche, common.topic.notable_for, g.1q67vh6br
University of Duisburg-Essen, education.educational_institution.colors, White
2010 Duisburger Filmwoche, common.topic.notable_for, g.1q67phzp9
Duisburg, location.location.events, 1983 Duisburger Filmwoche
1989 Duisburger Filmwoche, freebase.valuenotation.has_value, Start date
University of Duisburg-Essen, location.location.geolocation, m.0wm_lfx
Theater Duisburg, common.topic.notable_types, Venue
University of Duisburg, common.topic.notable_types, College/University
1990 Duisburger Filmwoche, freebase.valuenotation.has_value, End date
Duisburg, location.location.events, 2005 Duisburger Filmwoche
Düsseldorf, location.location.contains, University of Duisburg-Essen
1991 Duisburger Filmwoche, common.topic.notable_for, g.1q67d673f
1977 Duisburger Filmwoche, time.event.locations, Duisburg
2009 Duisburger Filmwoche, time.event.locations, Duisburg
2014 Duisburger Filmwoche, common.topic.notable_types, Film festival event
Duisburg, location.location.events, 1985 Duisburger Filmwoche
Duisburg Inner Harbour, common.topic.article, m.09gn5gm
Duisburg Inner Harbour, travel.tourist_attraction.near_travel_destination, Museum Küppersmühle
1985 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburg, location.location.events, g.121k2ngk
MSV Duisburg, sports.sports_team.venue, m.0wz2vks
Duisburg, location.location.adjoin_s, m.0h4s32p
Duisburg, location.location.events, 1996 Duisburger Filmwoche
University of Duisburg-Essen, common.topic.article, m.09ggxs
Duisburg, common.topic.webpage, m.03kw6dg
Duisburg, location.location.events, 1984 Duisburger Filmwoche
1986 Duisburger Filmwoche, common.topic.notable_for, g.1q67pn6mv
1980 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburg Inner Harbour, common.topic.notable_types, Tourist attraction
Duisburg, location.location.events, 2008 Duisburger Filmwoche
Duisburg Inner Harbour, common.topic.image, Duisburg harbour old
University of Duisburg, education.educational_institution_campus.educational_institution, University of Duisburg
1977 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
1978 Duisburger Filmwoche, common.topic.notable_for, g.1q67p46_0
1994 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
1986 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
Duisburg, location.location.events, Operation Hurricane
Weeze Airport, aviation.airport.serves, Duisburg
Duisburg, location.location.contains, Citibank Tower
m.0jvkmql, location.mailing_address.citytown, Duisburg
1998 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
1981 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
Duisburger Filmwoche, time.recurring_event.instances, 1992 Duisburger Filmwoche
University of Duisburg-Essen, education.educational_institution.students_graduates, m.0svssfn
Coat of arms of Duisburg, common.image.size, m.02bvlkq
Duisburg, location.location.events, 1977 Duisburger Filmwoche
1986 Duisburger Filmwoche, time.event.locations, Duisburg
1993 Duisburger Filmwoche, common.topic.notable_for, g.1q67cy8hw
Theater Duisburg, location.location.containedby, Duisburg
University of Duisburg-Essen, organization.endowed_organization.endowment, m.0h7cl2b
1989 Duisburger Filmwoche, time.event.locations, Duisburg
University of Duisburg-Essen, education.educational_institution.students_graduates, m.0w5mr8g
University of Duisburg-Essen, base.schemastaging.context_name.pronunciation, m.010yv7v6
Duisburg, location.location.events, 2013 Duisburger Filmwoche
Duisburg, location.location.events, 2014 Duisburger Filmwoche
1998 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
Bombing of Duisburg in World War II, time.event.included_in_event, Strategic bombing during World War II
Duisburger Filmwoche, time.recurring_event.instances, 1995 Duisburger Filmwoche
University of Duisburg, location.location.containedby, Duisburg
University of Duisburg-Essen, education.educational_institution.phone_number, m.0h7cl0h
2011 Duisburger Filmwoche, common.topic.notable_for, g.12573hlw4
Germany, government.form_of_government.countries, Parliamentary republic
1982 Duisburger Filmwoche, time.event.locations, Duisburg
University of Duisburg-Essen, common.topic.notable_for, g.125dcb09j
Duisburg, location.location.events, 1982 Duisburger Filmwoche
Duisburg, location.location.events, 2004 Duisburger Filmwoche
1989 Duisburger Filmwoche, freebase.valuenotation.has_value, Opening date
m.0h4s5r6, location.adjoining_relationship.adjoins, Duisburg
Citibank Tower, location.location.containedby, Duisburg
1982 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
University of Duisburg, common.topic.webpage, m.0cx88nn
Duisburg's inner harbour., common.image.size, m.04pyk_x
1979 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
1999 Duisburger Filmwoche, common.topic.notable_for, g.1q67dcckr
m.0whx0l1, education.education.institution, University of Duisburg
University of Duisburg-Essen, organization.organization.headquarters, m.0h7ck_y
Steinbruch, location.location.containedby, Duisburg
2013 Duisburger Filmwoche, common.topic.notable_for, g.1q3sh2jyv
1992 Duisburger Filmwoche, freebase.valuenotation.has_value, Start date
1997 Duisburger Filmwoche, common.topic.notable_for, g.1q67p_xjs
1992 Duisburger Filmwoche, freebase.valuenotation.has_value, End date
1984 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburg, location.location.contains, Wedaustadion
Duisburg, location.location.contains, MSV-Arena
2003 Duisburger Filmwoche, common.topic.notable_for, g.1q67pcdmc
Duisburg, location.location.events, 2009 Duisburger Filmwoche
2014 Duisburger Filmwoche, common.topic.notable_for, g.1q67b7tqn
2012 Duisburger Filmwoche, common.topic.notable_types, Film festival event
MSV-Arena, location.location.containedby, Duisburg
Duisburg, location.location.contains, Duisburg Inner Harbour
Duisburger Filmwoche, time.recurring_event.instances, 1989 Duisburger Filmwoche
1988 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
2006 Duisburger Filmwoche, common.topic.notable_for, g.1q67d67nw
2012 Duisburger Filmwoche, time.event.locations, Duisburg
1992 Duisburger Filmwoche, common.topic.notable_for, g.1q679tw4n
1983 Duisburger Filmwoche, time.event.locations, Duisburg
1995 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburg, location.location.events, San Luca feud
m.0svv2kv, education.education.institution, University of Duisburg
Duisburg, location.location.events, 1979 Duisburger Filmwoche
1997 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
2001 Duisburger Filmwoche, common.topic.notable_for, g.1q67phz8r
Duisburg, location.location.events, 1994 Duisburger Filmwoche
University of Duisburg-Essen, education.educational_institution.students_graduates, m.0n1k95d
Duisburg, location.location.events, 1986 Duisburger Filmwoche
Duisburger Filmwoche, time.recurring_event.instances, 2011 Duisburger Filmwoche
Love Parade 2010, time.event.locations, Duisburg
Duisburg, location.location.events, World Games 2005
1997 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburger Filmwoche, time.recurring_event.instances, 1979 Duisburger Filmwoche
1996 Duisburger Filmwoche, common.topic.notable_for, g.1q67gx3fl
Duisburg, location.location.events, 2001 Duisburger Filmwoche
2000 Duisburger Filmwoche, common.topic.notable_for, g.1q67n_rn8
1994 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
m.0jfwxz7, location.mailing_address.citytown, Duisburg
1984 Duisburger Filmwoche, common.topic.notable_for, g.1q67cy8df
1989 Duisburger Filmwoche, common.topic.notable_for, g.1q676jh3t
1987 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
Duisburger Filmwoche, time.recurring_event.instances, 1997 Duisburger Filmwoche
1977 Duisburger Filmwoche, common.topic.notable_for, g.1q67gx3x_
m.0wl13vb, location.mailing_address.citytown, Duisburg
MSV-Arena, common.topic.image, MSV-Arena Duisburg 02
m.0h76rwd, organization.leadership.organization, University of Duisburg-Essen
m.0byl4g8, education.education.institution, University of Duisburg-Essen
Theater Duisburg, common.topic.image, Theater Duisburg
Duisburg, location.location.events, 1992 Duisburger Filmwoche
Duisburg, location.location.events, 1989 Duisburger Filmwoche
Duisburg, location.location.containedby, Düsseldorf
1990 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburg Inner Harbour, location.location.containedby, Duisburg
1996–97 Bundesliga, time.event.locations, Duisburg
Germany, location.country.form_of_government, Federal republic
Duisburg, location.location.containedby, Germany
1996 Duisburger Filmwoche, time.event.locations, Duisburg
1995 Duisburger Filmwoche, common.topic.notable_for, g.1q6799sg6
m.0h4s32p, location.adjoining_relationship.adjoins, Duisburg
m.0svssfn, education.education.institution, University of Duisburg-Essen
1995 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
Düsseldorf, base.aareas.schema.administrative_area.administrative_children, Duisburg
Duisburger Filmwoche, time.recurring_event.instances, 2013 Duisburger Filmwoche
1988 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburg, location.location.contains, Theater Duisburg
Duisburg, location.location.events, 1998 Duisburger Filmwoche
Duisburger Filmwoche, time.recurring_event.instances, 1998 Duisburger Filmwoche
University of Duisburg-Essen, education.educational_institution.total_enrollment, m.0h76rw4
University of Duisburg, common.topic.notable_for, g.125by45wh
Duisburg, location.location.events, 1990 Duisburger Filmwoche
1996 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
MSV Duisburg, sports.sports_team.arena_stadium, MSV-Arena
University of Duisburg, organization.organization.headquarters, m.0jvkmql
Duisburg, location.location.geolocation, m.02xhrqr
2011 Duisburger Filmwoche, time.event.locations, Duisburg
University of Duisburg-Essen, education.educational_institution_campus.educational_institution, University of Duisburg-Essen
Duisburg, location.location.containedby, Germany
1983 Duisburger Filmwoche, common.topic.notable_for, g.1q678tprh
Duisburg, common.topic.article, m.0ps20
University of Duisburg-Essen, education.educational_institution.students_graduates, m.0svv9n3
2012 Duisburger Filmwoche, common.topic.notable_for, g.1q67p_xhy
2008 Duisburger Filmwoche, time.event.locations, Duisburg
1994 Duisburger Filmwoche, common.topic.notable_for, g.1q67pkwgr
1989 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
Theater Duisburg, common.topic.notable_for, g.1259xmz6g
1981 Duisburger Filmwoche, common.topic.notable_for, g.1q67b255f
1994 Duisburger Filmwoche, time.event.locations, Duisburg
University of Duisburg-Essen, education.educational_institution.students_graduates, m.0byl4g8
1985 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
Duisburg, location.location.events, Bombing of Duisburg in World War II
Bombing of Duisburg in World War II, base.culturalevent.event.entity_involved, Nazi Germany
Duisburger Filmwoche, time.recurring_event.instances, 2008 Duisburger Filmwoche
m.0wz2vks, sports.team_venue_relationship.team, MSV Duisburg
1979 Duisburger Filmwoche, common.topic.notable_for, g.1q67csv3l
m.03lfhzz, common.webpage.topic, University of Duisburg-Essen
University of Duisburg-Essen, education.educational_institution.students_graduates, m.0_lfrv9
Duisburg, location.location.contains, Gerhard Mercator University
Duisburger Filmwoche, film.film_festival.location, Duisburg
1990 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
MSV-Arena, sports.sports_facility.teams, MSV Duisburg
University of Duisburg-Essen, base.jewlib.parent_institution.judaica_owning_units, Salomon Ludwig Steinheim Institute of German-Jewish Studies
2004 Duisburger Filmwoche, common.topic.notable_for, g.1q679k9gn
Duisburg, common.topic.image, Coat of arms of Duisburg
2009 Duisburger Filmwoche, common.topic.notable_for, g.1q67886gf
Bombing of Duisburg in World War II, common.topic.notable_types, Military Conflict
Duisburger Filmwoche, time.recurring_event.instances, 1999 Duisburger Filmwoche
Duisburg, location.location.events, 1978 Duisburger Filmwoche
1999 Duisburger Filmwoche, time.event.locations, Duisburg
1979 Duisburger Filmwoche, time.event.locations, Duisburg
Germany, government.form_of_government.countries, Constitutional republic
Duisburg, base.aareas.schema.administrative_area.administrative_area_type, German city
Duisburg, location.location.contains, University of Duisburg
Duisburger Filmwoche, time.recurring_event.instances, 2002 Duisburger Filmwoche
World Games 2005, time.event.locations, Duisburg
Duisburg, location.location.events, 2013 Köln Stranger Than Fiction Documentary Film Festival
Duisburg's inner harbour., common.image.appears_in_topic_gallery, Duisburg
1978 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
Theater Duisburg, location.location.geolocation, m.0wmfqzz
Wedaustadion, location.location.containedby, Duisburg
2007 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburger Filmwoche, time.recurring_event.instances, 1990 Duisburger Filmwoche
2013 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburger Filmwoche, time.recurring_event.instances, 2005 Duisburger Filmwoche
1989 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
Duisburg, location.location.events, 1997 Duisburger Filmwoche
Duisburg, location.location.contains, University of Duisburg-Essen
Duisburger Filmwoche, time.recurring_event.instances, 2003 Duisburger Filmwoche
Duisburger Filmwoche, time.recurring_event.instances, 2000 Duisburger Filmwoche
1991 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
2008 Duisburger Filmwoche, common.topic.notable_for, g.12v_gvk1g
Duisburg, location.location.events, 1980 Duisburger Filmwoche
Duisburg, location.location.events, 1996–97 Bundesliga
2000 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburg, base.aareas.schema.administrative_area.administrative_parent, Düsseldorf
Gerhard Mercator University, location.location.containedby, Duisburg
1987 Duisburger Filmwoche, common.topic.notable_for, g.1q678jlcw
University of Duisburg-Essen, education.educational_institution.students_graduates, m.0_kxy2v
Duisburg, location.location.events, 2007 Duisburger Filmwoche
1990 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
Bombing of Duisburg in World War II, common.topic.article, m.0268c8q
Duisburger Filmwoche, time.recurring_event.instances, 1996 Duisburger Filmwoche
Duisburger Filmwoche, time.recurring_event.instances, 1984 Duisburger Filmwoche
University of Duisburg-Essen, location.location.containedby, Duisburg
1988 Duisburger Filmwoche, common.topic.notable_for, g.1q67d_25g
Duisburg, location.location.events, 2006 Duisburger Filmwoche
1996 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
1981 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
2013 Duisburger Filmwoche, common.topic.notable_types, Film festival event
m.0_lfrv9, education.education.institution, University of Duisburg-Essen
University of Duisburg-Essen, education.educational_institution.school_type, Public university
m.0_kxy2v, education.education.institution, University of Duisburg-Essen
2013 Köln Stranger Than Fiction Documentary Film Festival, time.event.locations, Duisburg
2008 Duisburger Filmwoche, common.topic.notable_types, Film festival event
Duisburg, location.location.events, 2000 Duisburger Filmwoche
1995 Duisburger Filmwoche, freebase.valuenotation.has_value, Start date
1989 Duisburger Filmwoche, freebase.valuenotation.has_value, End date
1992 Duisburger Filmwoche, freebase.valuenotation.has_value, Official website
2002 Duisburger Filmwoche, common.topic.notable_for, g.1q67chp6l
2007 Duisburger Filmwoche, common.topic.notable_for, g.1q67dpk6b
1984 Duisburger Filmwoche, freebase.valuenotation.has_value, Closing date
m.03kw6dg, common.webpage.topic, Duisburg
2004 Duisburger Filmwoche, time.event.locations, Duisburg
Duisburg, common.topic.image, Schwanentor Bridge
2014 Duisburger Filmwoche, time.event.locations, Duisburg

Answer: Constitutional republic
Representative democracy
Parliamentary republic
Federal republic