A bike mechanic explains the physics of a bike to a registered nurse.
The bike mechanic is explaining to a clown.
A clown and a registered nurse are two different profession.
exists e1 s1 x1 x2 x3 x4 x5.(n_physics(x3) & Theme(e1,x3) & Actor(e1,x1) & v_explain(e1) & of(x3,x4) & to(x4,x5) & n_nurse(x5) & a_registered(s1) & Theme(s1,x5) & n_bike(x4) & n_mechanic(x1) & of(x1,x2) & n_bike(x2))
exists e1 x1 x2 x3.(n_mechanic(x1) & of(x1,x2) & n_bike(x2) & to(e1,x3) & n_clown(x3) & Actor(e1,x1) & v_explain(e1))