With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: IPhone 3G includes several new software features.
text_B: Mobile business development is a category of business development which focuses on attracting new customers in the Mobile Web markets .. business development. business development. Mobile Web. Mobile Web. There are large efforts being made to make innovative mobile ICT services work .. ICT. Information and communication technologies. Examples of these services include mobile tourist guides and shopping guides for consumers .. tourist guides. guide book. As an emerging trend , technology and service providers combine their expertise and resources to design these services .. This incorporates designing several models  : the Value network , a Value proposition , a Revenue model and a Technological architecture .. Value network. Value network. Value proposition. Value proposition. Revenue model. Revenue model. Technological architecture. Mobile business development#Technological architecture
not_related.