CREATE TABLE table_50397 ("Institution" TEXT, "Location" TEXT, "Founded" FLOAT, "Affiliation" TEXT, "Enrollment" FLOAT, "Team Nickname" TEXT, "Primary conference" TEXT, "Home Rink" TEXT)

What primary conference does the team nicknamed Phoenix belongs to?
SELECT "Primary conference" FROM table_50397 WHERE "Team Nickname" = 'phoenix'
SELECT "Primary conference" FROM "table_50397" WHERE "Team Nickname" = 'phoenix'