Predicate: arbitrage
Roleset id: arbitrage.01 , work, vncls:
Roles:
        Arg0: worker
        Arg1: job, project
        Arg2: employer
        Arg3: coworker
        Arg4: instrumental
Example: autogen1
        -LRB- In stock-index arbitrage , traders buy or sell big baskets
        of stocks against offsetting positions in futures . -RRB-
        ArgM-MNR : stock-index
        Rel : arbitrage
        Arg0 : traders
Example: autogen2
        In index arbitrage , program traders buy and sell stocks and
        stock-index futures to profit from small price discrepancies
        between the markets .
        ArgM-MNR : index
        Rel : arbitrage
        Arg0 : program traders