A mother carries her child through a market on her back.
a old man was talking
There is no connection between the two sentences. The first sentence is about a mother carrying a child through a market. The second sentence is about an old man talking, with no indication of his location, or to whom he is talking.
exists e1 x1 x2 x3 x4.(on(e1,x4) & n_back(x4) & of(x4,x1) & n_female(x1) & n_female(x1) & through(e1,x3) & n_market(x3) & Theme(e1,x2) & Actor(e1,x1) & v_carry(e1) & n_child(x2) & of(x2,x1) & n_mother(x1))
exists e1 s1 x1.(Actor(e1,x1) & v_talk(e1) & n_man(x1) & a_old(s1) & Theme(s1,x1))