premise: Shirtless man with long pole navigates covered boat down a palm tree lined river past a hut.
hypothesis: A man without a shirt is on the water.
explanation_1: The man is without a shirt because he is shirtless.
explanation_2: The man without a shirt is in a tropical area.
explanation_3: "man without a shirt" is a rephrasing of "shirtless man" and a boat implies water and river also confirms water.
premise_logic: exists e2 e1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7 x8.(Theme(e2,x3) & Actor(e2,x1) & v_navigate(e2) & down(x3,x4) & past(e1,x8) & n_hut(x8) & Time(e1,x7) & n_river(x7) & Actor(e1,x6) & v_line(e1) & (x4 = x6) & n_tree(x4) & of(x4,x5) & n_palm(x5) & n_boat(x3) & a_covered(s3) & Theme(s3,x3) & with(x1,x2) & n_pole(x2) & a_long(s2) & Theme(s2,x2) & n_man(x1) & a_shirtless(s1) & Theme(s1,x1))
hypothesis_logic: exists p1 x1 x3.(n_water(x3) & on(x1,x3) & -exists x2.(with(x1,x2) & n_shirt(x2)) & n_man(x1))