The chain of events which led to the collapse of Barings, Britain's oldest merchant bank, is a demonstration of how not to manage a derivatives operation.
The collapse of Barings can not be attributed to one single cause.
The context indicates that Barings collapsed solely due to their derivatives operation. 
( z1 possible :polarity - :ARG1 ( z2 attribute :ARG1 ( z3 collapse :ARG1 ( z4 company :name ( z5 name :op "BP" ) ) ) :ARG2 ( z6 thing :quant 1 :ARG0-of ( z7 cause ) :ARG1-of ( z8 single ) ) ) )