Table:
text: Lake Athletic Conference
Membership
Membership
School Location_ Mascot County Year_Joined Previous_Conference Year_Left Conference_Joined
Whiting Whiting Oilers 45 Lake 1969 Northwestern 2007 Greater South Shore
Hammond Bishop Noll Hammond Warriors 45 Lake 1973 Independents 2007 Greater South Shore
East Chicago Central East Chicago Cardinals 45 Lake 1986 none (new school) 1987 Independents
Calumet Calumet Township Warriors 45 Lake 1993 Lake Suburban 2007 Greater South Shore
Griffith Griffith Panthers 45 Lake 1993 Lake Suburban 2007 Northwest Crossroads
Highland Highland Trojans 45 Lake 1993 Lake Suburban 2007 Northwest Crossroads
Munster Munster Mustangs 45 Lake 1993 Lake Suburban 2007 Northwest Crossroads
Andrean Merrillville Fighting `59ers 45 Lake 1998 Independents 2007 Northwest Crossroads
Lake Station Edison Lake Station Fighting Eagles 45 Lake 1998 Northwest Hoosier 2007 Greater South Shore

text: Lake Athletic Conference
Membership
Membership
School Location_ Mascot County Year_Joined Previous_Conference Year_Left Conference_Joined
Hammond Clark Hammond Pioneers 45 Lake 1969 Northwestern 2007 Great Lakes
Hammond Gavit Hammond Gladiators 45 Lake 1969 Northwestern 2007 Great Lakes
Hammond Hammond Wildcats 45 Lake 1969 Northwestern 2007 Great Lakes
Hammond Morton Hammond Governors 45 Lake 1969 Northwestern 2007 Great Lakes
East Chicago Roosevelt East Chicago Roughriders 45 Lake 1969 Northwestern 1986 none (consolidated into East Chicago Central )
Hammond Tech Hammond Tigers 45 Lake 1969 Northwestern 1981 none (school closed)
East Chicago Washington East Chicago Senators 45 Lake 1969 Northwestern 1986 none (consolidated into East Chicago Central )

Question: Which conference is joined by a former Northwestern conference and a mascot of the Oilers under the Lake Athletic Conference?