CREATE TABLE table_15659 ("Team" TEXT, "Car ( s ) " TEXT, "Driver ( s ) " TEXT, "Primary Sponsor ( s ) " TEXT, "Owner ( s ) " TEXT, "Crew Chief" TEXT)

Who is Eric McClure's and Tristar Motorsports' crew chief?
SELECT "Crew Chief" FROM table_15659 WHERE "Team" = 'tristar motorsports' AND "Driver(s)" = 'eric mcclure'
SELECT "Crew Chief" FROM "table_15659" WHERE "Driver(s)" = 'eric mcclure' AND "Team" = 'tristar motorsports'