Boy takes a bath with diving mask and snorkel.
Girl teaching students in class
A boy can't teaching in class.
exists e1 e2 x1 x2 x3 x4 x5.(ne_nam_boy(x1) & with(e1,x3) & n_snorkel(x5) & n_mask(x4) & Actor(e2,x4) & v_dive(e2) & subset_of(x5,x3) & subset_of(x4,x3) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_bath(x2))
exists x1 x2 x3 x4.(a_topic(x1) & in(x1,x4) & n_class(x4) & n_student(x1) & of(x1,x3) & n_teaching(x3) & (x1 = x2) & ne_nam_girl(x2))