Bald man with a cigarette in his mouth prepares to pour a chemical into a tub filled with solution.
A plumber tries to fix a stoped up tub.
A bald man is not necessarily a plumber and to pour a chemical into a tub doesn't necessarily imply to fix a stoped up tub.
exists e1 p1 x1 x2 x3 x4.(Topic(e1,p1) & Actor(e1,x1) & v_prepare(e1) & exists e2 e3 x5 x6 x7 x8.(into(e2,x6) & with(e3,x8) & n_solution(x8) & Theme(e3,x7) & v_fill(e3) & (x6 = x7) & n_tub(x6) & Theme(e2,x5) & Actor(e2,x1) & v_pour(e2) & n_chemical(x5)) & with(x1,x3) & in(x3,x4) & n_mouth(x4) & of(x4,x1) & n_male(x1) & n_cigarette(x3) & n_man(x1) & (x1 = x2) & ne_nam_bald(x2))
exists e1 p1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2 e3 s1 x2.(Theme(e3,x2) & Actor(e3,x1) & v_fix(e3) & n_tub(x2) & a_up(s1) & Theme(s1,x2) & Theme(e2,x2) & v_stop(e2)) & n_plumber(x1))