With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: GPS is part of the IPhone 3G.
text_B: The iPhone 3G is a smartphone that was designed and marketed by Apple Inc. .. smartphone. smartphone. iPhone. iPhone. It is the second generation of iPhone , and was introduced on June 9 , 2008 , at the WWDC 2008 at the Moscone Center in San Francisco , United States .. second. list of iOS devices#iPhone. iPhone. iPhone. WWDC 2008. WWDC#2008. Moscone Center. Moscone Center. San Francisco. San Francisco. The iPhone 3G is internally similar to its predecessor , but included several new hardware features , such as GPS , 3G data and tri-band UMTS / HSDPA .. UMTS. Universal Mobile Telecommunications System. HSDPA. High-Speed Downlink Packet Access. iPhone. iPhone. GPS. GPS. tri-band. multi-band. The device was originally loaded with the concurrently launched iPhone OS 2.0 .. iPhone OS 2.0. iPhone OS 2. iPhone. iPhone. In addition to other features -LRB- including push email and turn-by-turn navigation -RRB- , this new operating system introduced the App StoreApple 's new distribution platform for third-party applications .. push email. push email. turn-by-turn navigation. turn-by-turn navigation
related.