Three people in bright green shirts work with trees.
The people are studying tree disease.
Just because three people in bright green shirts work with trees does not mean that they are studying tree disease.
exists e1 s1 s2 x1 x2 x3.(with(e1,x3) & n_tree(x3) & Actor(e1,x1) & v_work(e1) & in(x1,x2) & n_shirt(x2) & a_green(s2) & Theme(s2,x2) & a_bright(s1) & Theme(s1,x2) & n_people(x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_study(e1) & n_disease(x2) & of(x2,x3) & n_tree(x3))