Some people are standing alone on the beach in their swimsuits.
Men in suits stand alongside the beach
One cannot stand on and alongside a beach at the same time. It's unlikely that one would wear a swimsuit underneath a regular suit.
exists e1 s1 x1 x2 x3.(n_swimsuit(x3) & of(x3,x2) & n_thing(x2) & n_beach(x2) & in(e1,x3) & on(e1,x2) & a_alone(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & n_people(x1))
exists e1 x1 x2 x3.(n_beach(x3) & alongside(e1,x3) & Actor(e1,x1) & v_stand(e1) & in(x1,x2) & n_suit(x2) & n_man(x1))