A boy rides a bike overlooking a large body of water.
The wind coming off the lake is blowing his hair.
The first sentence does not saying anything regarding wind.  It does not say what the large body of water is, so we can't say it's a lake, nor does it mention anything about the boy's hair.
exists e2 e1 s1 x1 x2 x3 x4 x5.(Theme(e2,x2) & Actor(e2,x1) & v_ride(e2) & Theme(e1,x4) & Actor(e1,x3) & v_overlook(e1) & of(x4,x5) & n_water(x5) & n_body(x4) & a_large(s1) & Theme(s1,x4) & (x2 = x3) & n_bike(x2) & n_boy(x1))
exists e1 p1 s1 x1 x2 x3 x4.(n_hair(x4) & of(x4,x1) & n_male(x1) & n_lake(x3) & n_wind(x1) & a_topic(x1) & exists e2.(Theme(e2,x4) & Actor(e2,x3) & v_blow(e2)) & that(x1,p1) & a_off(s1) & Manner(e1,s1) & Actor(e1,x2) & v_come(e1) & (x1 = x2))