<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: Umzila: Isitimela siyindlela eyinhloko yokuthutha eTokyo, enesitimela esikhulu kunazo zonke emadolobheni emhlabeni kanye nenethiwekhi enkulu efanayo yemigwaqo engaphezulu komhlaba. I-JR East isebenzisa inethiwekhi enkulu kunazo zonke yezitimela eTokyo, kuhlanganise ne-Yamanote Line loop ezungeza isikhungo sedolobha laseTokyo. Izinhlangano ezimbili ezihlukene ziqondisa umzila ongaphansi komhlaba: i - Tokyo Metro yangasese ne - Tokyo Metropolitan Bureau of Transportation kahulumeni. UHulumeni Wedolobha kanye nabathwali abazimele basebenzisa imizila yamabhasi nomzila owodwa wethilamu. Izinsizakalo zasendaweni, zesifunda nezikazwelonke ziyatholakala, nezikhumulo ezinkulu eziteshini ezinkulu zesitimela, kuhlanganise naseTokyo, eShinagawa naseShinjuku. Umbuzo: Uyini umzila wesitimela owodwa eJapane?  <response>: I-Yamanote Line loop 