With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Boeing 737s served the same markets that DC-9 airliners previously filled.
text_B: Yale University women 's ice hockey -LRB- YWIH -RRB- is an NCAA Division I varsity ice hockey program at Yale University in New Haven , Connecticut .. NCAA Division I. NCAA Division I. varsity. varsity team. ice hockey. college hockey. Yale University. Yale University. One of the oldest varsity women 's ice hockey programs in the country , Yale women 's ice hockey dates back to 1975 .. varsity. varsity team. ice hockey. college hockey. Beginning as a club sport , the program gained varsity team status in 1977 -- 78 .. varsity. varsity team. Yale competes in the ECAC Hockey League -LRB- ECACHL -RRB- , along with Ivy League foes Harvard , Princeton , Cornell , Dartmouth and Brown .. ECAC Hockey. ECAC Hockey. Ivy League. Ivy League. Both the Yale men 's and women 's ice-hockey teams play at Ingalls Rink , also known as `` The Whale '' .. Ingalls Rink. Ingalls Rink. YWIH participates in Bulldog Buddies , a program at Yale New Haven Hospital that teams children with brain tumors with one of the Yale Athletic Teams .. In 2011 , they adopted a nine-year-old girl with a brain tumor , she goes to all of the home games and calls them when she is in the blues .
not_related.