With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Citalopram is of a drug class.
text_B: Citalopram -LRB- brand names  : Celexa , Cipramil and others -RRB- is an antidepressant drug of the selective serotonin reuptake inhibitor -LRB- SSRI -RRB- class .. antidepressant. antidepressant. drug. Medication. selective serotonin reuptake inhibitor. selective serotonin reuptake inhibitor. It has U.S. Food and Drug Administration approval to treat major depression , which it received in 1998 , and is prescribed off-label for other conditions .. Food and Drug Administration. Food and Drug Administration. major depression. Major depressive disorder. off-label. Off-label use. In Australia , the UK , Germany , Portugal , Poland , and most European countries , it is licensed for depressive episodes and panic disorder with or without agoraphobia .. panic disorder. panic disorder. agoraphobia. agoraphobia. In Spain and Denmark it is also used for obsessive-compulsive disorder .. obsessive-compulsive disorder. obsessive-compulsive disorder
related.