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.
Text: Wednesday, September 30, 2015 12:36PM IST (7:06AM GMT) Huawei and Google Unveil the Ultimate Premium Smartphone: Meet the Nexus 6P San Francisco, United States Huawei and Google introduced the Nexus 6P, an innovative smartphone featuring Android 6.0 Marshmallow, Google’s newest operating system for mobile devices, in San Francisco.
user
developer: Nexus 6P, Huawei; manufacturer: Nexus 6P, Huawei; developer: Nexus 6P, Google
assistant