A girl in a black shirt is watching a chemical reaction.
A girl is wearing a black shirt
"A girl in a black shirt" is a rephrasing of "A girl is wearing a black shirt."
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_watch(e1) & n_reaction(x3) & of(x3,x4) & n_chemical(x4) & in(x1,x2) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_girl(x1))
exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_girl(x1))