Gleb, when I see you posting this types of things I wonder how your storing this data.  I imagine you having a room with post its and strings.  If you haven't looked into Neo4j, check it out, it's a free graph database.  You can create nodes (nosql records of any data) and connect them with as many arbitrary relationships as you want.   The relationships themselves can have properties example:

[Josh] ----- Fucked a ----> [Rabbit] ---  eats --> [Grass] <--- sprayed with --- [Monsanto Herbicide]

You can then visualize these nodes and relationships and ask things like "Is Josh connected to Monsanto ?" and see the path.  It's good at answering the how am I connected to Kevin Bacon question.  I haven't used it for a long time but it was easy to setup and has a web interface to visualize and add data.  May be able to find connections not obvious when the data sets get large.