Massachusetts put in a tough program in November 1995 and has seen its welfare rolls drop to the lowest level in 23 years.
Massachusetts put in a lenient program in 1995, increasing its welfare rolls significantly. 
mnli hypothesis: Massachusetts put in a lenient program in 1995, increasing its welfare rolls significantly.  premise: Massachusetts put in a tough program in November 1995 and has seen its welfare rolls drop to the lowest level in 23 years.