CREATE TABLE table_50504 ("Year" FLOAT, "Team" TEXT, "Co-Drivers" TEXT, "Class" TEXT, "Laps" FLOAT, "Pos." TEXT, "Class Pos." TEXT)

Which team has finished in 1st place in 2011?
SELECT "Team" FROM table_50504 WHERE "Pos." = '1st' AND "Year" = '2011'
SELECT "Team" FROM "table_50504" WHERE "Pos." = '1st' AND "Year" = '2011'