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 made up 55 percent of GAO's workload in 1996.
mnli hypothesis: Congressional requests made up 55 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.