CREATE TABLE table_4257 ("Name" TEXT, "Family name" TEXT, "Receptor" TEXT, "Coreceptor" TEXT, "Property" TEXT, "Chromosomal location" TEXT)

What are the names listed in the family il-1f2?
SELECT "Name" FROM table_4257 WHERE "Family name" = 'IL-1F2'
SELECT "Name" FROM "table_4257" WHERE "Family name" = 'IL-1F2'