CREATE TABLE table_65152 ("Date" TEXT, "Opponent" TEXT, "Venue" TEXT, "Result" TEXT, "Attendance" FLOAT)

What is the highest attendance for the match against west ham united at the venue of a?
SELECT MAX("Attendance") FROM table_65152 WHERE "Venue" = 'a' AND "Opponent" = 'west ham united'
SELECT MAX("Attendance") FROM "table_65152" WHERE "Opponent" = 'west ham united' AND "Venue" = 'a'