GM established grounds for suspicion of industrial spying by presenting affidavits from its employees. The aim will be to determine if VW's project was copied from GM data - essential if industrial espionage is to be proved.
The affidavits were submitted by employees.
The affidavits could have been submitted by GM, or most probably, lawyers that work for GM. You can neither confirm or deny who submitted the affidavits based on the text. This is a little abstract for the system.
( z1 submit :ARG0 ( z2 person :ARG1-of ( z3 employ ) ) :ARG1 ( z4 affidavit ) )