CREATE TABLE table_70566 ("Year" FLOAT, "Entrant" CLOB, "Chassis" CLOB, "Engine" CLOB, "Points" FLOAT)

How many points does the year after 1986 with a AGS JH23B chassis have?
SELECT "Points" FROM table_70566 WHERE "Year" > '1986' AND "Chassis" = 'ags jh23b'
SELECT "Points" FROM "table_70566" WHERE "Chassis" = 'ags jh23b' AND "Year" > '1986'