A man uses a dropper to conduct an experiment.
A chemistry teacher measures carefully to show the class how to do it.
Just because a man has a dropper to conduct an experiment does not mean he will measure carefully like a Chemistry teacher who shows his class to do it correctly.
exists e1 p1 x1 x2.(Theme(e1,p1) & Recipient(e1,x2) & Actor(e1,x1) & v_use(e1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x1) & v_conduct(e2) & n_experiment(x3)) & n_dropper(x2) & n_man(x1))
exists p1 s1 x1 x2 x3 x4.(n_class(x4) & a_topic(x1) & Topic(x1,p1) & a_carefully(s1) & Manner(p1,s1) & exists e1 p2.(Theme(e1,x4) & Actor(e1,x1) & v_show(e1) & Topic(x4,p2) & exists e2.(Theme(e2,x1) & Actor(e2,x4) & v_do(e2))) & n_thing(x1) & n_measure(x1) & of(x1,x3) & n_teacher(x3) & of(x1,x2) & n_chemistry(x2))