A doctor checks on his medical equipment.
A doctor preparing for work.
Checks on medical equipment is a method of preparing for work.
exists s1 x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_equipment(x3) & a_medical(s1) & Theme(s1,x3) & of(x3,x1) & n_male(x1) & n_check(x1) & of(x1,x2) & n_doctor(x2))
exists e1 x1 x2 x3.(a_topic(x1) & for(e1,x3) & n_work(x3) & Actor(e1,x2) & v_prepare(e1) & (x1 = x2) & n_doctor(x1))