The agency has 53 people on staff, including 27 attorneys, some of whom function as administrators and others who are part-time.
There are 10 full time and 17 part time attorneys on staff. 
mnli hypothesis: There are 10 full time and 17 part time attorneys on staff.  premise: The agency has 53 people on staff, including 27 attorneys, some of whom function as administrators and others who are part-time.