String createGroupAgent(double food, double economic, double social,
String name)
{
AbstractAgent a = new PoliticalAgentGroup(food, 0, AgentType.R, economic,
social, name);
a.initialise(new EnvironmentConnector(this));
sim.addParticipant(a.getId(), a);
sim.activateParticipant(a.getId());
return a.getId();
}