Many people sit at tables under umbrellas near a large hanging lantern.
The people are sitting under umbrellas in the sun.
It cannot be assumed that the umbrellas were in the sun, especially with the presence of a large hanging lantern.  It could be cloudy, night, raining, or any other weather option of which sun is only one.
exists e1 s1 x1 x2 x3 x4 x5.(under(e1,x3) & near(x3,x4) & n_lantern(x4) & of(x4,x5) & n_hanging(x5) & a_large(s1) & Theme(s1,x4) & n_umbrella(x3) & at(e1,x2) & n_table(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & n_quantity(x1))
exists e1 x1 x2 x3.(n_sun(x3) & n_people(x1) & in(e1,x3) & under(e1,x2) & n_umbrella(x2) & Actor(e1,x1) & v_sit(e1))