The ladies are enjoying a laugh while out at a bar.
ladies are in a bar
"out at a Bar" and "in a bar " are synonyms.
exists e1 x1 x2 x3.(n_lady(x1) & r_out(e1) & at(e1,x3) & n_bar(x3) & r_while(e1) & Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1) & n_laugh(x2))
exists p1 x1.(exists x2.(in(x1,x2) & n_bar(x2)) & n_lady(x1))