People sitting and eating inside a diner.
Friends are eating together.
WE DON'T KNOW THAT THE PEOPLE ARE FRIENDS.
exists e1 e2 x1 x2 x3.(inside(e2,x3) & n_diner(x3) & Actor(e2,x2) & v_eat(e2) & n_people(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1))
exists e1 p1 x1.(exists s1.(Theme(s1,x1) & a_together(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_eat(e1) & n_friend(x1))