What is the relationship between Apple Inc and iPhone in the context of the input sentence. Choose an answer from: 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: Aug 31 Apple Inc on Monday teamed up with network gear maker Cisco Systems Inc to improve the performance of its iPad and iPhone devices on Cisco's corporate network.
user
product_or_material_produced
assistant