An older man breaks open nuts, while his grandchildren watch.
A man cracking nuts.
A man cracking nuts is less descriptive description of older man breaks open nuts.
exists e1 s1 s2 x1 x2 x3 x4.(while(e1,x4) & n_watch(x4) & a_grandchildren(s2) & Theme(s2,x4) & of(x4,x1) & n_male(x1) & Theme(e1,x3) & Actor(e1,x1) & v_open(e1) & n_nut(x3) & n_break(x1) & of(x1,x2) & n_man(x2) & r_more(s1) & a_older(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_crack(e1) & n_nut(x3) & (x1 = x2) & n_man(x1))