A person in a gray hoodie sitting on a latter.
A person is standing all alone.
One cannot sit on a ladder while standing up.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & on(e1,x4) & n_latter(x4) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_hoodie(x2) & a_gray(s1) & Theme(s1,x2) & n_person(x1))
exists e1 s1 s2 x1.(a_alone(s2) & Manner(e1,s2) & a_all(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & n_person(x1))