(S (S (SBAR (S (PP-SBJ (NP (PP (BASENP (ADJP (NN 有望) (MDO な)) (NN 競争) (NN 相手)) (IN の)) (NN 場)) (IN が)) (VP (VP (NN 拡大) (VBV し)) (VP (VBV 始め)))) (INTE て)) (COMMA 、) (S (PP-SBJ (BASENP (NN 協議)) (IN は)) (VP (PP (BASENP (NN 先週)) (IN に)) (VP (PP (NP (RB より) (NN 公け)) (IN に)) (VP (VBV なり) (VP (VBV 始め) (VP (MD た)))))))) (PERIOD 。))
有望 な 競争 相手 の 場 が 拡大 し 始め て 、 協議 は 先週 に より 公け に なり 始め た 。
The deliberations have started to become more public in the last week as the field of likely contenders has begun to expand .