wsmlVariant _"http://www.wsmo.org/wsml/wsml-syntax/wsml-flight"

namespace {_"http://tripcom.org/ontologies/EDI/TimePeriod#",
	cyc _"http://sw.cyc.com/2006/07/27/cyc/#",
	dc _"http://purl.org/dc/elements/1.1#" }
  
ontology _"http://tripcom.org/ontologies/EDI/TimePeriod"

nonFunctionalProperties 
	dc#title hasValue "Time Period" 
	dc#subject hasValue "Time Period" 
	dc#description hasValue "Time Period" 
	dc#contributor hasValue { _"http://foxvog.org/doug/" }
	dc#date hasValue "2007-07-02" 
	dc#type hasValue _"http://www.wsmo.org/2004/d2/v1.0/#ontologies"
	dc#format hasValue "text/plain" 
	dc#language hasValue "en-US" 
	dc#rights hasValue _"http://www.deri.org/privacy.html" 
	version hasValue "$Revision: 1.3 $" 
endNonFunctionalProperties

concept cyc#Individual
concept cyc#TemporalThing subConceptOf cyc#Individual
concept cyc#ContinuousTimeInterval subConceptOf cyc#TemporalThing
concept cyc#Date subConceptOf cyc#ContinuousTimeInterval
/*
 "A specialization of ContinuousTimeInterval.  A continuous time-interval is an instance of Date if and only if it has a standardly-defined location on particular calendar.  Here, having a ``standardly-defined location'' means that the interval is a standard unit of time (with respect to some calendar) whose start and end times can be specified in whole-number multiples of that and larger units.  Thus the midnight hour GMT on 1 January 2000 CE is a date; but neither the five-hour-long interval between midnight and 5:00 AM GMT nor the hour-long interval between 12:15 and 1:15 AM */

concept cyc#CalendarQuarter subConceptOf cyc#Date
concept cyc#CalendarHalfYear subConceptOf cyc#Date
concept cyc#CalendarDay	subConceptOf cyc#Date
concept cyc#CalendarHour subConceptOf cyc#Date
concept cyc#CalendarMonth subConceptOf cyc#Date
concept cyc#CalendarWeek subConceptOf cyc#Date
concept cyc#WeekDay subConceptOf cyc#CalendarDay	// includes national holidays
concept WorkDay subConceptOf cyc#WeekDay	// excludes national holidays
concept cyc#CalendarYear subConceptOf cyc#Date

concept cyc#UnitOfMeasure subConceptOf cyc#Individual
concept cyc#UnitOfTime subConceptOf cyc#UnitOfMeasure

instance cyc#QuartersDuration memberOf cyc#UnitOfTime
instance HalfYearsDuration memberOf cyc#UnitOfTime
instance cyc#DaysDuration memberOf cyc#UnitOfTime
instance cyc#HoursDuration memberOf cyc#UnitOfTime
instance cyc#MonthsDuration memberOf cyc#UnitOfTime
instance cyc#WeeksDuration memberOf cyc#UnitOfTime
instance cyc#YearsDuration memberOf cyc#UnitOfTime

/*
//  	Time period type
//	DE_2151	http://www.ean.se/EANCOM_2002/ean02s4/experts/part3/dc3z.htm
// complete for EANCOM
	 
  	"3M"		CalendarQuarter	 subdivision of year into four equal parts // QuartersDuration
  	"6M"		CalendarHalfYear subdivison of year into two equal parts // HalfYearsDuration
  	"CD"		CalendarDay		// (includes weekends and holidays)
  	"D"		DaysDuration	the 24 hour period during which the arth completes one rotation of its axis // is this the distinction?
  	"H"		CalendarHour	on of 24 divisions of a day // HoursDuration
  	"M"		CalendarMonth	in Gregorian Calendar // MonthsDuration
  	"W"		CalendarWeek	// WeeksDuration
  	"WD"		WorkDay 	// (excluding national holidays)
  	"Y"		CalendarYear	// YearsDuration (duration according to Gregorian Calendar)

*/