A bearded man repairing guitars.
The man is fixing a string instrument
Someone repairing something entails fixing it.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_repair(e1) & n_guitar(x3) & (x1 = x2) & n_man(x1) & a_bearded(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_fix(e1) & n_instrument(x2) & of(x2,x3) & n_string(x3))