Russians in Hong Kong form one of the territory's smaller groups of expatriates and a minor portion of the worldwide Russian diaspora. Many Russians from China passed through Hong Kong in the 1950s through 1970s on their way to resettlement in Australia, Brazil, and Canada.
Does this next sentence follow, given the preceding text?
Some were caught then had to return

Options are: (i). Yes. (ii). It's impossible to say. (iii). No.