What is the oldest underground line in London?
system
landan main sabase puraani bhumigat rekha kya he?
user
metropolitan railway 1863 main kholaa gaya tha or yah pehali landan bhumigat line thi or vastav main duniya kaa pehla shahari bhumigat railway tha.metropolitan railway padington or faringdon ke bich chalaa.
assistant
<|system|>
</s>
<|user|>
landan main sabase puraani bhumigat rekha kya he?</s>
<|assistant|>
metropolitan railway 1863 main kholaa gaya tha or yah pehali landan bhumigat line thi or vastav main duniya kaa pehla shahari bhumigat railway tha.metropolitan railway padington or faringdon ke bich chalaa.</s>
