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.

Tesco Bank offers 1.6pc on instant-access savings The new rate, which includes an introductory bonus, is an improvement but not quite a best buy Tesco Bank's new interest rate shows the financial environment is improving Photo: Alamy By Amelia Murray

Answer: parent_organization: Tesco Bank, Tesco