With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Barack Obama was not expected to win the primary.
text_B: James Benjamin Martel is a physician , surgeon and scientist .. He is former Chair of Surgery , Mercy San Juan Medical Center , former Chief of Ophthalmology , Otolaryngology -LRB- ENT -RRB- , and Plastic Surgery , Sutter Roseville Medical Center .. Surgery. Surgery. Mercy San Juan Medical Center. Mercy San Juan Medical Center. Ophthalmology. Ophthalmology. Otolaryngology. Otolaryngology. Plastic Surgery. Plastic Surgery. He is the former Director of Ophthalmology , Sutter General and Memorial Hospitals and Assistant Professor of Ophthalmology and Radiology , Johns Hopkins Medical School and Wilmer Ophthalmological Institute .. Ophthalmology. Ophthalmology. He is currently Clinical Professor of Ophthalmology and Associate Dean of Graduate Medical Education in California Northstate University College of Medicine .. Ophthalmology. Ophthalmology
not_related.