Those in Egypt, Libya, Iraq, and Yemen were eventually overthrown by secular nationalist revolutionaries.
( ( Those ( in ( Egypt ( , ( Libya ( , ( Iraq ( , ( and Yemen ) ) ) ) ) ) ) ) ) ( ( ( were eventually ) ( overthrown ( by ( secular ( nationalist revolutionaries ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT Those)) (PP (IN in) (NP (NNP Egypt) (, ,) (NNS Libya) (, ,) (NNP Iraq) (, ,) (CC and) (NNP Yemen)))) (VP (VBD were) (ADVP (RB eventually)) (VP (VBN overthrown) (PP (IN by) (NP (JJ secular) (JJ nationalist) (NNS revolutionaries))))) (. .)))
There are still more that have not been overthrown yet.
( There ( ( are ( ( still more ) ( that ( ( have not ) ( been ( overthrown yet ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBP are) (ADJP (ADJP (RB still) (JJR more)) (SBAR (WHNP (WDT that)) (S (VP (VBP have) (RB not) (VP (VBN been) (VP (VBN overthrown) (ADVP (RB yet))))))))) (. .)))