With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Ecuador borders Colombia.
text_B: The IBM 370 printer was used on the IBM 305 RAMAC computer system , introduced by IBM on September 14 , 1956 .. IBM 305 RAMAC. IBM 305 RAMAC. IBM. IBM. The 370 was connected to the 305 by a serial data line from the S track of the computer 's drum memory and printed 80-columns with a punched tape controlled carriage .. drum memory. drum memory. punched tape controlled carriage. Carriage control tape. Line formatting was programmed by inserting wire jumpers into a plugboard control panel .. plugboard. plugboard. The printer mechanism used an eight sided , seven position -LRB- 56 character -RRB- print slug in a horizontal orientation .. The X , O , and 2 bits of the character code rotate the slug and the 1 , 4 , and 8 bits selected the position .. The platen hammer then struck the paper from behind , causing the selected character to print .. Of the 56 characters on the print slug , only 47 were printable with the standard valid character set of the IBM 305 computer -- the complete alphabet , numbers 0 -- 9 , and eleven special characters -LRB- 48 characters , including the blank character -RRB- .. IBM. IBM
not_related.