A young woman, sitting, holds up a sign protesting BP.
A person is sitting.
young woman, sitting simply means a person is sitting
exists e1 e2 e3 s1 s2 x1 x2 x3 x4.(ne_org_bp(x4) & for(e2,e3) & Theme(e3,x4) & Actor(e3,x1) & v_protest(e3) & a_up(s2) & Manner(e2,s2) & Theme(e2,x3) & Actor(e2,x1) & v_hold(e2) & n_sign(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_woman(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1.(Actor(e1,x1) & v_sit(e1) & n_person(x1))