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gptkbp:instanceOf
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aircraft engine
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gptkbp:aircraft
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gptkb:Airbus_A330
gptkb:Airco_DH.4
gptkb:Boeing_80
gptkb:Douglas_DC-3
gptkb:Boeing_787
gptkb:Boeing_757
gptkb:Curtiss_H-12
gptkb:Fokker_D.VII
gptkb:Airbus_A300
gptkb:Boeing_40C
gptkb:Martin_B-10
gptkb:Martin_MB-2
gptkb:North_American_B-25_Mitchell
gptkb:Wright_Model_B
gptkb:Airbus_A320
gptkb:Bristol_F.2_Fighter
gptkb:McDonnell_Douglas_DC-10
gptkb:Lockheed_Constellation
gptkb:Boeing_40
gptkb:Boeing_737
gptkb:Boeing_307_Stratoliner
gptkb:Boeing_314_Clipper
gptkb:Boeing_777
gptkb:Curtiss_JN-4
gptkb:Vought_VE-7
gptkb:Handley_Page_O/400
gptkb:Lockheed_Vega
gptkb:Martin_MB-1
gptkb:Douglas_O-2
Sopwith Camel
De Havilland DH-4
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gptkbp:application
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gptkb:World_War_I_aircraft
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gptkbp:bore
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5.5 in
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gptkbp:compressionRatio
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5.2:1
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gptkbp:coolingSystem
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water-cooled
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gptkbp:displacement
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27.0 L
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gptkbp:drivetrain
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overhead valve
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gptkbp:firstFlight
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1917
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gptkbp:fuelType
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spark ignition
carburetor
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https://www.w3.org/2000/01/rdf-schema#label
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Liberty L-12S engine
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gptkbp:is_used_in
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military aircraft
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gptkbp:manufacturer
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gptkb:Liberty_Engine_Company
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gptkbp:notableUsers
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gptkb:United_States_Army_Air_Service
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gptkbp:powerOutput
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400 hp
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gptkbp:productionYears
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1917-1920
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gptkbp:setting
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liquid-cooled
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gptkbp:stroke
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6.0 in
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gptkbp:successor
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gptkb:Liberty_L-12_engine
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gptkbp:type
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gptkb:V12_engine
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gptkbp:weight
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400 lb
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