A bare chested man with swimming goggles on his head with a group of swimmers behind him.
a shirtless man is followed by swimmers
The swimmers behind the man are following him becuase he is their teacher.
exists s1 s2 x1 x2 x3 x4 x5 x6.(a_topic(x1) & with(x1,x2) & with(x2,x5) & of(x5,x6) & behind(x6,x1) & n_male(x1) & n_male(x1) & n_swimmer(x6) & n_group(x5) & on(x2,x4) & n_head(x4) & of(x4,x1) & n_goggles(x2) & of(x2,x3) & n_swimming(x3) & n_man(x1) & a_chested(s2) & Theme(s2,x1) & a_bare(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(Actor(e1,x2) & n_swimmer(x2) & Theme(e1,x1) & v_follow(e1) & n_man(x1) & a_shirtless(s1) & Theme(s1,x1))