With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Marilyn Monroe appeared in a play directed by Billy Wilder.
text_B: The AnsaldoBreda - Ansaldo STS Driverless Metro is a class of driverless electric multiple units and corresponding signaling system .. Manufactured by AnsaldoBreda and Ansaldo STS in Italy , it is or will be used on the Copenhagen Metro , Princess Nora bint Abdul Rahman University , the Brescia Metro , the Thessaloniki Metro , Line 5 of the Milan Metro , Line C of the Rome Metro and the Yellow Line of the Taipei Rapid Transit System .. Copenhagen Metro. Copenhagen Metro. Brescia Metro. Brescia Metro. Milan Metro. Milan Metro. Rome Metro. Rome Metro. Thessaloniki Metro. Thessaloniki Metro. Princess Nora bint Abdul Rahman University. Princess Nora bint Abdul Rahman University. Line 5 of the Milan Metro. Milan Metro Line 5. Line C of the Rome Metro. Line C ( Rome Metro ). Yellow Line of the Taipei Rapid Transit System. Yellow Line ( TRTS ). The first system to use this class of driverless electric multiple units was the Copenhagen Metro which opened in 2002 .. Copenhagen Metro. Copenhagen Metro. The rolling stock consists of two to six articulated cars .. All trains are 2.65 m wide , except those used on the Rome Metro which are 2.85 m wide .. Rome Metro. Rome Metro. All operate on standard gauge .. standard gauge. standard gauge. Each car has a power output of 210 or , fed from a third rail at 750 volts -LRB- except in Rome where it is 1,500 V overhead line -RRB- .. volt. third rail. third rail. overhead line. overhead line. The systems are fully automated , consisting of automatic train protection -LRB- ATP -RRB- , automatic train operation -LRB- ATO -RRB- and automatic train supervision .. automatic train protection. automatic train protection. automatic train operation. automatic train operation
not_related.