A group of people stare at a building.
A group of scientists examine the laboratory building.
The group of people isn't necessarily scientists. The building isn't necessarily a laboratory.
exists e1 x1 x2 x3.(at(e1,x3) & n_building(x3) & Actor(e1,x1) & v_stare(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3 x4.(n_building(x3) & of(x3,x4) & n_laboratory(x4) & Theme(e1,x3) & Actor(e1,x1) & v_examine(e1) & of(x1,x2) & n_scientist(x2) & n_group(x1))