While 70 percent of GAO's work was done as a result of congressional requests in 1996, it was 95 percent in 1999.
Congressional requests accounted for 70 percent of GAO's workload in 1996.
mnli hypothesis: Congressional requests accounted for 70 percent of GAO's workload in 1996. premise: While 70 percent of GAO's work was done as a result of congressional requests in 1996, it was 95 percent in 1999.