A group of children are walking in the sand.
Some kids are walking at the beach in the summertime.
You can not infer it is summertime.
exists e1 x1 x2 x3.(n_sand(x3) & in(e1,x3) & Actor(e1,x1) & v_walk(e1) & of(x1,x2) & n_child(x2) & n_group(x1))
exists e1 x1 x2 x3.(n_summertime(x3) & n_beach(x2) & in(e1,x3) & at(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_kid(x1))