A man uses a dropper to conduct an experiment.
A man does an experiment.
conduct an experiment shows that the man  does an experiment.
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 e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_experiment(x2) & n_man(x1))