Farabundo Marti National Liberation Front's [FMLN] urban commandos have denied reports that they participated in an attack on vice president-elect Francisco Merino's home.
They denied reports according to the statement
It clearly says that they denied the reports, I don't see why the model doesn't understand that.
( z1 deny :ARG0 ( z2 they ) :ARG1 ( z3 report ) :ARG1-of ( z4 say :ARG0 ( z5 state ) ) )