Question: what type of organization is Sigma Phi Omega?
SQL: SELECT "Type" FROM "1-2538117-2" WHERE "Organization" = 'Sigma Phi Omega';

Question: how many types of organization were founded in San Diego State University? 
SQL: SELECT COUNT("Type") FROM "1-2538117-2" WHERE "Founding University" = 'San Diego State University';

Question: name the Sorority a.k.a. "Sigmas" that was founded in the University of Southern California.
SQL: SELECT "Organization" FROM "1-2538117-2" WHERE "Founding University" = 'University of Southern California' AND "Type" = 'Sorority' AND "Nickname" = '"Sigmas"';