Two women observing a fountain in a park.
two women looking at an installation at a park
Observing implies looking.  An installation may be a fountain.
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_park(x4) & Theme(e1,x3) & Actor(e1,x2) & v_observe(e1) & n_fountain(x3) & (x1 = x2) & n_woman(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & at(e1,x3) & at(x3,x4) & n_park(x4) & n_installation(x3) & Actor(e1,x2) & v_look(e1) & (x1 = x2) & n_woman(x1) & card_eq_2(x1))