A group of people playing a board game.
Some people are having fun together.
Sentence 2 is a general explanation for what is happening in sentence 1.  Some people is a general version of a "group of people."  "Having fun" can be a general explanation for "playing a board game."
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_game(x4) & of(x4,x5) & n_board(x5) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2.(a_together(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_fun(x2) & n_people(x1))