lucy:petowner
petownerid=2petownername=\"lucy\"pethouseid=[1]petownercredit=5000
sally'home:pet's house
houseid=1petname=\"sally\
animal shop:merchant
merchantid=3merchantname=\"animal shop\"commodityid=[1]ownerid=4
manage
cat food:commodity
commodityid=1commodityname=\"cat food\"merchantid=3price=300
buy
adopt
rechargeconsume
dog food:commodity
commodityid=2commodityname=\"dog food\"merchantid=3price=200
lily's credit:credit
value=100
kate's credit:credit
value=200
lucy's credit:credit
value=5000
exist
kate:adopter
adopterid=4pethouseid=[1]adoptername=\"kate\"adoptercredit=200
lily:adopter
adopterid=1pethouseid=[1]adoptername=\"lily\"adoptercredit=100
