This source file (e.g. wn30.src provided with FreeLing) must contain at each line the information relative to a sense, with the following format:
sense hypern:hypern:...:hypern semfile TopOnto:TopOnto:...:TopOnto sumo cyc
That is: the first field is the sense code. The following fields are:
Note that the only WN relation encoded here is hypernymy. Note also that semantic codes such as WN semantic file or EWN TopOntology features are simply (lists of) strings. Thus, you can include in this file any ontological or semantic information you need, just substituing the WN-related codes by your own semantic categories.