CREATE TABLE table_5648 ("Outcome" CLOB, "Date" CLOB, "Tournament" CLOB, "Surface" CLOB, "Partner" CLOB, "Opponents" CLOB, "Score" CLOB)

Who is the partner of the tournament on 6 July 1987?
SELECT "Partner" FROM table_5648 WHERE "Date" = '6 july 1987'
SELECT "Partner" FROM "table_5648" WHERE "Date" = '6 july 1987'