With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Margaret Osborne duPont was born June 4, 1918.
text_B: An incisura is Latin for notch , and may refer to  :. Incisura -LRB- gastropod -RRB- a genus of keyhole limpets. Angular incisure , which varies somewhat in position with the state of distension of the viscus. Angular incisure. Angular incisure. Suprascapular notch , a notch in the superior border of the scapula , just medial to the base of the coracoid process. Suprascapular notch. Suprascapular notch. It may also sometimes refer to the Dicrotic notch seen with aorta pressure. Dicrotic notch. Dicrotic notch. incisura cardiaca , the notch where the left margin of the oesophagus joins the greater curvature of the stomach. incisura cardiaca. Cardiac notch of stomach. oesophagus. oesophagus. greater curvature. greater curvature
not_related.