With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Michael is the middle name of an actor that stars in Vanilla Sky.
text_B: Polyhalogenated compounds -LRB- PHCs -RRB- are any compounds with multiple substitutions of halogens .. They are of particular interest and importance because they bioaccumulate in humans , and comprise a superset of which has many toxic and carcinogenic industrial chemicals as members .. bioaccumulate. bioaccumulate. PBDEs , PCBs , dioxins -LRB- PCDDs -RRB- and PFCs are all polyhalogenated compounds .. They are generally non-miscible in organic solvents or water , but miscible in some hydrocarbons from which they often derive .. hydrocarbons. hydrocarbons
not_related.