CREATE TABLE table_56087 ("Class" TEXT, "Wheels" TEXT, "Date" TEXT, "No. built" FLOAT, "Loco Nos." TEXT, "Comments" TEXT)

What is the Loco Nos of the e3 class?
SELECT "Loco Nos." FROM table_56087 WHERE "Class" = 'e3'
SELECT "Loco Nos." FROM "table_56087" WHERE "Class" = 'e3'