With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Matt Damon was not in a biopic.
text_B: Clarice Morant -LRB- August 29 , 1904 -- June 10 , 2009 -RRB- , also known as Classie , was an American centenarian from Washington , D.C. , who gained national media attention for her role as caregiver to Rozzie Laney , Morant 's younger sister diagnosed with Alzheimer 's disease , and Ira Barber , Morant 's younger brother diagnosed with dementia and suffering the aftereffects of a disabling stroke .. American. United States. centenarian. centenarian. caregiver. caregiver. dementia. dementia. stroke. stroke
not_related.