With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Hugh Hefner was a soldier.
text_B: George Sherwood Richardson -LRB- 1896-1988 -RRB- was an American engineer known for his elegant bridges , innovative construction techniques and skillful planning of highways .. Designer of many bridges in the Pittsburgh and Allegheny County areas in the 20th century , he has been called `` the dean of Pittsburgh bridge engineers '' .. Born in Georgetown , Colorado , he served in World War I prior to graduating from the University of Colorado in 1920 .. World War I. World War I. University of Colorado. University of Colorado. After a stint with the Wyoming Department of Highways and time on the faculty of the University of Pennsylvania , Richardson went on to rise to be assistant chief engineer of the Allegheny County Department of Public Works .. University of Pennsylvania. University of Pennsylvania. Allegheny County Department of Public Works. Allegheny County Department of Public Works. In 1939 he founded his own firm , Richardson , Gordon & Associates , which has been involved in the planning and design of a number of major highway projects across the United States .. In the 1980s , the company was acquired by international architectural and engineering conglomerate HDR , Inc. .. Among other notable work , the firm created the erection process and custom equipment used to put up the Eero Saarinen-designed Saint Louis Gateway Arch .. Eero Saarinen. Eero Saarinen. Gateway Arch. Gateway Arch. Richardson died of a heart attack at the age of 92 in the home to which he had retired in Colorado Springs , Colorado .
not_related.