A man in blue swimming trunks and a man in black swimming trunks are at the beach.
The gay lovers are enjoying the beach.
Just because they are at the beach in swimming trunks doesn't imply them to be enjoying the beach.
exists p1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8.(n_beach(x8) & at(x1,x8) & subset_of(x5,x1) & in(x5,x6) & n_trunk(x6) & of(x6,x7) & n_swimming(x7) & a_black(s2) & Theme(s2,x6) & n_man(x5) & subset_of(x2,x1) & in(x2,x3) & n_trunk(x3) & of(x3,x4) & n_swimming(x4) & a_blue(s1) & Theme(s1,x3) & n_man(x2))
exists e1 s1 x1 x2.(n_beach(x2) & n_lover(x1) & a_gay(s1) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_enjoy(e1))