People strolling in a mall with colorful decorations hanging from the ceiling.
The mall is empty.
The mall can’t be empty if people are strolling in the mall.
exists e2 e1 s1 x1 x2 x3 x4 x5 x6.(n_ceiling(x6) & a_topic(x1) & in(e1,x3) & with(x3,x4) & from(e2,x6) & Actor(e2,x5) & v_hang(e2) & (x4 = x5) & n_decoration(x4) & a_colorful(s1) & Theme(s1,x4) & n_mall(x3) & Actor(e1,x2) & v_stroll(e1) & (x1 = x2) & n_people(x1))
exists s1 x1.(n_mall(x1) & Theme(s1,x1) & a_empty(s1))