Forensic scientist looks through a microscope as others look on.
A scientist is teaching something to students.
Looking through a microscope as others watch doesn't imply the scientist is teaching something and there is no implication that the others that are watching are students.
exists e1 p1 s1 x1 x2.(exists e2 p2 x3.(exists s2.(Theme(s2,x3) & a_on(s2)) & Topic(e2,p2) & Actor(e2,x3) & v_look(e2) & -(x3 = x1) & n_person(x3)) & n_person(x1) & as(e1,p1) & through(e1,x2) & n_microscope(x2) & Actor(e1,x1) & v_look(e1) & n_scientist(x1) & a_forensic(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(to(e1,x3) & n_student(x3) & Theme(e1,x2) & Actor(e1,x1) & v_teach(e1) & n_thing(x2) & n_scientist(x1))