People observe animals in a covered exhibit at the zoo.
The people are at the zoo with the animals.
For the people to observe animals at the zoo, they would need to be there with the animals.
exists e1 s1 x1 x2 x3 x4.(n_zoo(x4) & in(e1,x3) & at(x3,x4) & n_exhibit(x3) & a_covered(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_observe(e1) & n_animal(x2) & n_people(x1))
exists p1 x1 x2 x3.(n_animal(x3) & n_zoo(x2) & n_people(x1) & at(x1,x2) & with(x2,x3))