CREATE TABLE table_31893 ("Heat Rank" FLOAT, "Lane" FLOAT, "Swimmer" TEXT, "Country" TEXT, "Time" FLOAT, "Overall Rank" FLOAT)

Tell me the average heat rank with a lane of 2 and time less than 27.66
SELECT AVG("Heat Rank") FROM table_31893 WHERE "Lane" = '2' AND "Time" < '27.66'
SELECT AVG("Heat Rank") FROM "table_31893" WHERE "Lane" = '2' AND "Time" < '27.66'