CREATE TABLE table_31770 ("Nationality" TEXT, "No [a ]" TEXT, "Pos [a ]" TEXT, "From" TEXT, "School/club" TEXT, "Pts [b ]" FLOAT, "Reb [b ]" FLOAT, "Ast [b ]" FLOAT)

What is the points that is more than 636 and has a value of 50?
SELECT "Pts [b ]" FROM table_31770 WHERE "Reb [b ]" > '636' AND "No [a ]" = '50'
SELECT "Pts [b ]" FROM "table_31770" WHERE "No [a ]" = '50' AND "Reb [b ]" > '636'