A group of people eats dinner together.
People are drink and eating too much together.
The fact that people eat dinner does not imply that they also drink.  Just because they eat dinner together doesn't imply that they are eating too much together.
exists e1 s1 x1 x2 x3.(a_together(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x1) & v_eat(e1) & n_dinner(x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists p1 s1 s2 x1.(a_together(s2) & Manner(p1,s2) & r_too(p1) & a_much(s1) & Manner(p1,s1) & exists x2 x3 x4.((x1 = x2) & n_eating(x4) & n_drink(x3) & subset_of(x4,x2) & subset_of(x3,x2)) & n_people(x1))