There are numerous people sitting in gray chairs.
Lots of people sit in grey chairs.
It is common for people to be sitting in gray chairs.
exists p1 x1 e1 s1 s2 x2 x3 x4.((x1 = x2) & in(e1,x4) & n_chair(x4) & a_gray(s2) & Theme(s2,x4) & Actor(e1,x3) & v_sit(e1) & (x2 = x3) & n_people(x2) & a_numerous(s1) & Theme(s1,x2))
exists e1 x1 x2 x3 x4.(in(e1,x3) & n_chair(x3) & of(x3,x4) & n_grey(x4) & Actor(e1,x1) & v_sit(e1) & of(x1,x2) & n_people(x2) & n_lot(x1))