Reaction of 5 Particles interacting via 2 Channels
   Reaction Particles:
     0. quasi-particle (pi- beam and 12C target)
     1. pi- + p
     2. 11B
     3. K0S
     4. Lambda
   Reaction Channels:
     1. pi- + 12C -> (pi- + p) + 11B (quasi-free)
        Interaction model(s):
        [pi-p_in_12C] Quasi-free particle production <nucleus_fermi> {/}
     2. pi- + p --> K0S + Lambda
        Interaction model(s):
        [pi- + p_fix_K0S_Lambda] 2-body fixed mass, partial width {/}
        [pi- + p_genbod_K0S_Lambda] Pluto build-in genbod {/genbod}