With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Marvel Cinematic Universe's first phase ended.
text_B: Microcosm was a hypermedia system , originally developed in 1988 by the Department of Electronics and Computer Science at the University of Southampton , with a small team of researchers in the Computer Science group  : Wendy Hall , Andrew Fountain , Hugh Davis and Ian Heath .. hypermedia. hypermedia. University of Southampton. University of Southampton. Wendy Hall. Wendy Hall. The system pre-dates the web and builds on early hypermedia systems , such as Ted Nelson 's work and that of Doug Engelbart .. hypermedia. hypermedia. Ted Nelson. Ted Nelson. Doug Engelbart. Doug Engelbart
not_related.