CREATE TABLE table_61938 ("Summoned" TEXT, "Elected" TEXT, "Assembled" TEXT, "Dissolved" TEXT, "1st member" TEXT, "2nd member" TEXT)

What is the dissolved date of the parliament summoned on 28 February 1467?
SELECT "Dissolved" FROM table_61938 WHERE "Summoned" = '28 february 1467'
SELECT "Dissolved" FROM "table_61938" WHERE "Summoned" = '28 february 1467'