<human>: Question: How many km of underground passageways are dedicated to teh evacuationof Paris' waste liquids?

Is From then on, the new reservoir system became Paris' principal source of drinking water, and the remains of the old system, pumped into lower levels of the same reservoirs, were from then on used for the cleaning of Paris' streets. a good answer to this question?

OPTIONS:
- yes
- no
<bot>: no