southwest.relax

group: cs143hw2
				description[[ the data for this dataset was generated using {'<'}http://www.generatedata.com/>
				* the relation _flights_ contains basic information about Southwest flights.
        			* the relation _aircraft_ contains information about Southwest aircraft, including those acquired from Airtran.
        			* the relation _airtran_aircraft_ contains information about aircraft that Southwest acquired from Airtran.
		    		]]

				flights = { 
				  from  to  flightnum departure tail
				  LAX SFO 181 8 N8751R
				  LAX	SJC	185	9	N705SW
				  SJC	LAX	186	10	N404WN
				  BUR	SJC	191	11	N957WN
				  LAX	ATL	993	12	N7851A
				  MCO	CUN	991	13	N7827A
				  SJC	BUR	192	14	N709SW
				  SFO	LAX	182	15	N8751R
				  SJC	DAL	94	16	N705SW
				  SJC	PHX	99	17	N957WN 
				}

				aircraft = {
				  tail	type
				  N404WN	B73G
				  N705SW	B73G
				  N709SW	B73G
				  N8751R	B38M
				  N7851A	B73G
				  N7827A	B73G
				  N7854B	B73G
				  N7826B	B73G
				  N957WN	B738
				}
				
				airtran_aircraft = {
				  tail	type
				  N7851A	B73G 
				  N7827A	B73G 
				  N7854B	B73G 
				  N7826B	B73G
				}