The source added that the investigation proved that the bases of the genocide crime "were completed with a series of illegal arrests followed in some cases with assassinations or cases of disappearances and were preceded, according to information attached to the file, by cases of torture."
The source added that the investigation proved that the bases of the genocide crime "were completed with a series of... arrests."
The use of an ellipses (...) indicates that you have omitted material from the original quote. In this case, The bases of the genocide crime were completed with a series of illegal arrests, but my use of ellipses allowed me to omit the fact that the arrests were illegal.
( z1 add :ARG0 ( z2 source ) :ARG1 ( z3 prove :ARG0 ( z4 investigate ) :ARG1 ( z5 complete :ARG1 ( z6 base :ARG1 ( z7 crime :ARG1 ( z8 genocide ) ) ) :manner ( z9 arrest :quant ( z10 series ) ) ) ) )