1.   Although the details have yet to be finalized, Sato says the whole operation will have to rely on householders to separate their trash.

2.   In the upcoming pilot project, the city will ask residents to separate trash into toxic, wet, and dry piles.

3.   People should separate their trash, the ads said, not because the law required it, but because it was a good thing to do.

4.   The soil they scrape is put into a bucket, which gets transferred to a large, boxy sift, which helps separate the trash from the treasures.