Assertion: senate's senator | /r/HasProperty | appointed to the senate
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Source sentences:
text: Only three senators-in-waiting have been appointed to the Senate: the first was Stan Waters, who was appointed in 1990 on the recommendation of Brian Mulroney; the second was Bert Brown, elected a Senator-in-waiting in 1998 and 2004, and appointed to the Senate in 2007 on the recommendation of Prime Minister Stephen Harper; and the third was Betty Unger, elected in 2004 and appointed in 2012.