Which papers' first author is affiliated with an institution in the country "Japan" and has last name "Ohori"? Give me the titles of the papers.
return papers ;return first authors of #1 ;return last names of #2 ;return #1 where #3 is  Ohori ;return institutions that  #2 are affiliated with  ;return countries of #5 ;return #1 where #6 is  Japan ;return #1 in both #4 and #7 ;return the   titles of #8
['select', 'project', 'project', 'comparative', 'project', 'project', 'comparative', 'intersection', 'project']