CREATE TABLE table_name_71 (attendance INT, visitor VARCHAR, leading_scorer VARCHAR)

How many people were in attendance when the visiting team was the Nuggets and the leading scorer was J.R. Smith (28)?
SELECT SUM(attendance) FROM table_name_71 WHERE visitor = "nuggets" AND leading_scorer = "j.r. smith (28)"
SELECT SUM("attendance") FROM "table_name_71" WHERE "j.r. smith (28)" = "leading_scorer" AND "nuggets" = "visitor"