Roleset trigger.01 Verbnet Class: NONE "begin":

Roles:

Arg0:Agent


Arg1:Theme(-Creation)


Arg2:Instrument


Arg3:secondary predication

Examples:

transitive, active (-)
Paper and forest-products stocks were especially strong, as the offer for Great Northern Nekoosa by Georgia-Pacific triggered speculation that the industry could be in for a wave of merger activity.
Arg0:	the offer for Great Northern Nekoosa by Georgia-Pacific
REL:	triggered
Arg1:	speculation that the industry could be in for a wave of merger activity




with instrument (-)
However, the only outsider who has emerged to lead such a shareholder vote, Los Angeles investor Marvin Davis, who *trace* triggered the buy-out with a $5.4 billion bid in early August, is hanging back -- apparently to avoid being blamed for contributing to the deal's collapse.
Arg0:	*trace* -> who -> Los Angeles investor Marvin Davis
REL:	triggered
Arg1:	the buy-out
Arg2-with:	a $ 5.4 billion bid in early August

These seem to occur most often in the passive: be careful of trace chains. I don't think the attributive will occur.