Two children are at a sink and pouring water into a bowl.
Children play in the mud.
At a sink implies being inside so the children cannot be playing in the mud.
exists p1 x1.(exists e1 x2 x3 x4 x5 x6.(at(x1,x2) & subset_of(e1,x2) & into(e1,x6) & n_bowl(x6) & Theme(e1,x5) & Actor(e1,x4) & v_pour(e1) & n_water(x5) & n_thing(x4) & subset_of(x3,x2) & n_sink(x3)) & n_child(x1) & card_eq_2(x1))
exists x1 x2 x3.(n_mud(x3) & a_topic(x1) & in(x1,x3) & n_play(x1) & (x1 = x2) & ne_nam_children(x2))