SRL for [challenge]: The filing adds a new twist to market speculation that Coniston Partners , a New York money manager , has bought more than 5 % of UAL stock and may [challenge] the UAL board 's decision last week to remain independent .
ARG-0: Coniston Partners , a New York money manager | ARG-M-MOD: may | ARG-1: the UAL board 's decision last week to remain independent