CREATE TABLE table_46982 ("Position" FLOAT, "Pilot" TEXT, "Glider" TEXT, "Speed" TEXT, "Distance" TEXT)

What is the average Position, when Speed is '143.5km/h'?
SELECT AVG("Position") FROM table_46982 WHERE "Speed" = '143.5km/h'
SELECT AVG("Position") FROM "table_46982" WHERE "Speed" = '143.5km/h'