People standing in front of mechanical equipment.
Animals jumping inside
The animals can only be either standing front of mechanical equipment, or they are jumping inside (I say this because many people consider humans or people to be animals).
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x3) & of(x3,x4) & n_equipment(x4) & a_mechanical(s1) & Theme(s1,x4) & n_front(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_people(x1))
exists e1 s1 x1 x2.(a_topic(x1) & a_inside(s1) & Manner(e1,s1) & Actor(e1,x2) & v_jump(e1) & (x1 = x2) & n_animal(x1))