unhinge.02
frames- [ARGM-TMP On Friday] , [ARG1 the stock-index futures market] was [rel unhinged] *-1 from [ARG2-from the stock market] [ARGM-TMP when the Chicago Mercantile Exchange halted trading in Standard & Poor 's 500 futures contract *T*-2] -- a `` circuit breaker '' procedure instituted * after the 1987 crash and implemented * for the first time .