The friends are walking around with their water bottles.
People are holding water bottles.
The people are holding bottles because they are with bottles.
exists e1 s1 x1 x2 x3.(n_bottle(x2) & of(x2,x3) & n_water(x3) & of(x2,x1) & n_thing(x1) & n_friend(x1) & with(e1,x2) & a_around(s1) & Manner(e1,s1) & Actor(e1,x1) & v_walk(e1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_bottle(x2) & of(x2,x3) & n_water(x3) & n_people(x1))