A bicyclist holds their bike over their head by a group of people.
a bicyclist holds up his bike to impress a girl
The bicyclist holds the bike over their head, but we don't know it's a male or female. We can't know that his bicycle is being held up to impress a girl or anyone at all.
exists e1 x1 x2 x3 x4 x5.(by(e1,x4) & of(x4,x5) & n_people(x5) & n_group(x4) & over(e1,x3) & n_head(x3) & of(x3,x1) & n_thing(x1) & n_thing(x1) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_bike(x2) & of(x2,x1) & n_bicyclist(x1))
exists e1 p1 s1 x1 x2 x3.(Topic(e1,p1) & exists e2 x4.(Theme(e2,x4) & Actor(e2,x1) & v_impress(e2) & n_girl(x4)) & a_up(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & n_bike(x3) & of(x3,x1) & n_male(x1) & n_bicyclist(x2) & n_bicyclist(x1))