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.

Christopher Pearce Share on twitter by David Ramli iiNet chief executive David Buckingham says the massive popularity of internet services like Netflix means current broadband plans will not be sustainable under the national broadband network unless the company building it drastically slashes prices.

Answer: industry: twitter, internet