Who built the first successful airplane?
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The subclass of airplane is the fixed-wing aircraft.
A fixed-wing aircraft is classed as an aircraft .
Who built the first successful airplane?</s>The subclass of airplane is the [unused1]fixed-wing aircraft                [unused2] .
Who built the first successful airplane?</s>The subclass of airplane is the fixed-wing aircraft.
Who built the first successful airplane?</s>A [unused1]fixed-wing aircraft                [unused2] is classed as an aircraft .
Who built the first successful airplane?</s>A fixed-wing aircraft is classed as an aircraft .
Who built the first successful airplane?</s>airplane,0,airplane,airplane,subclass of,[unused1]fixed-wing aircraft[unused2],[unused1]fixed-wing aircraft[unused2],0,airplane,[unused1]fixed-wing aircraft[unused2],0,[unused1]fixed-wing aircraft[unused2]
Who built the first successful airplane?</s>airplane,0,airplane,airplane,subclass of,fixed-wing aircraft,fixed-wing aircraft,0,airplane,fixed-wing aircraft,0,fixed-wing aircraft