With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ink Master is a contest.
text_B: trans-2 ,3 - Butylene carbonate is an organic compound with formula , or -LRB- H3C -RRB- 2 -LRB- C2H2 -RRB- -LRB- CO3 -RRB- .. carbonate. carbonate. It is an ester with a carbonate functional group bonded to both free ends of the trans-2 ,3 - butylene group .. ester. ester. carbonate. carbonate. functional group. functional group. bonded. covalent bond. butylene. butylene. It is also an heterocyclic compound with a five-membered ring containing two oxygen atoms , and can be viewed as a derivative of dioxolane , namely trans-4 ,5 - dimethyl-1 ,3 - dioxolan-2-one .. heterocyclic. heterocyclic. oxygen. oxygen. dioxolane. dioxolane. The compound is an aprotic polar solvent and has been proposed as an ingredient of the electrolyte of lithium batteries .. aprotic. aprotic. polar. Chemical polarity. electrolyte. electrolyte. lithium batteries. lithium batteries
not_related.