(IP (ADVP (AD 反而)) (PP-PRP (P 因为) (IP (NP-SBJ (-NONE- *PRO*)) (VP (VV 三强鼎立)))) (PU ,) (NP-SBJ (NN 人人)) (VP (ADVP (AD 都)) (PP-DIR (P 向) (NP (NN 中间))) (VP (VV 靠拢)))) arg0: *PRO*