Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

British telco Vodafone -- which owns a 40 per cent stake at Safaricom and a further 82.2 per cent in Vodacom Tanzania -- said the continued growth of mobile money is attributed to the fact that it services consumers at the bottom of the pyramid who cannot access banking services.

Answer: owned_by: Vodacom, Vodafone; parent_organization: Vodacom, Vodafone; subsidiary: Vodafone, Vodacom Tanzania; subsidiary: Vodafone, Vodacom; parent_organization: Vodacom Tanzania, Vodafone