With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Octavia Spencer worked on the animated movie Zootopia.
text_B: Perfluoropentacene -LRB- PFP -RRB- is an n-type organic semiconductor , which is made by fluorination of the p-type semiconductor pentacene .. organic semiconductor. organic semiconductor. fluorination. fluorination. semiconductor. semiconductor. pentacene. pentacene. It has a blueish-black color , and is used for molecular thin-film devices -LRB- like OLEDs or OFETs -RRB- .
not_related.