CREATE TABLE table_4895 ("Home team" CLOB, "Home team score" CLOB, "Away team" CLOB, "Away team score" CLOB, "Venue" CLOB, "Crowd" FLOAT, "Date" CLOB)

When Collingwood was the home team who was the opposing away team?
SELECT "Away team" FROM table_4895 WHERE "Home team" = 'collingwood'
SELECT "Away team" FROM "table_4895" WHERE "Home team" = 'collingwood'