who started southwest airlines?
Herb Kelleher Rollin King
neutral
 In April 1949 , Northwest Airlines sued the Glenn L. Martin Company , manufacturers of the Martin 2 @-@ 0 @-@ 2 , for $ 725 @,@ 000 . The lawsuit claimed that the company had sold the airline five defective aircraft , including the aircraft lost in Flight 421 . Glenn Martin , president of the aircraft manufacturing corporation , dismissed the lawsuit as a mere formality , a bit of meaningless legal maneuvering to appease disagreeing insurance companies . 

contradiction
 Southwest Sports Inc . 

entailment
 After the buyout by the International Airlines Group , Aer Lingus will rejoin the alliance at an unconfirmed date . 

neutral
 Saville and Fairchild went to Congress in 1950 , and obtained $ 114 million for the development of an electronic computer @-@ based air defense system , a project headed by George E. Valley Jr , who was a physicist at Massachusetts Institute of Technology ( MIT ) . The computer , named Whirlwind , helped the USAF develop the Semi Automatic Ground Environment ( SAGE ) air defense system . 

neutral
 Altair Airlines was a regional airline that operated out of Philadelphia from 1966 to 1982 . 
