premise: At this milestone in our history, I encourage honourable senators to reflect on the events of December 6, 1989, and to do what you can to ensure that we have -and to the extent that we have not, that we strive to have - a society where there is respect and harmony between men and women.
hypothesis: Senators have put a lot of effort to ensure respect and harmony between men and women before December 6, 1989.
reason: We don't know about the efforts of senators about the respect and harmony between men and women before that date.