idnum,contactid,firstcont,lastcont,investigation
1,1,gerald,holling,yes
1,2,delia,reese,yes
2,3,jacob,keating,no
2,4,jake,wilson,no
3,5,carlos,ramos,no
3,6,rachel,sandoval,yes
4,7,jesse,benavidez,yes
4,8,kyler,stravinsky,no
5,9,celeste,fry,yes
5,10,kaley,albertson,no
6,11,izel,sanchez,yes
6,12,jenelle,redding,yes
6,13,michael,patterson,yes