A man in a t-shirt rides an escalator with a shopping cart.
The man is in a mall shopping.
He could be anywhere that has an escalator and shopping cart- not necessarily in a mall.
exists x1.(all x2.(n_escalator(x2) -> exists s1 x3 x4 x5.(a_topic(x1) & in(x1,x3) & with(x3,x4) & n_cart(x4) & of(x4,x5) & n_shopping(x5) & for(x3,x2) & n_ride(x3) & a_t-shirt(s1) & Theme(s1,x3))) & n_man(x1))
exists p1 x1.(n_man(x1) & exists x2 x3.(in(x1,x2) & n_shopping(x2) & of(x2,x3) & n_mall(x3)))