(S (S (PP (NP (PP (BASENP (NNP 英国) (NN 中)) (IN の)) (NP (PP (BASENP (NN １０)) (IN の)) (NN 地域))) (IN で)) (COMMA 、) (S (PP-SBJ (NP (PP (BASENP (QP (NN 合計) (PRE 約) (NN １万)) (NN 人)) (IN の)) (NN 子供)) (IN が)) (VP (PP (BASENP (NN 研究)) (IN に)) (VP (VP (NN 参加) (VBV し)) (VP (MD た)))))) (PERIOD 。))
英国 中 の １０ の 地域 で 、 合計 約 １万 人 の 子供 が 研究 に 参加 し た 。
A total of nearly 10,000 children took part in the study , located in 10 regions across the UK .