Question 7: In ________, the
Japanese government offered transit rights and funding for the
repatriation of the original group of Sakhalin Koreans; however,
only 1,500 of them returned to South Korea in the next two decades.
Question 8: 
South Korean investors also began to participate in the
international tenders for works contracts to develop the Sakhalin
Shelf, as they are interested in the potential supply of ________.