On paper,it looks as if San Francisco shouldn't have a homelessn

On paper,it looks as if San Francisco shouldn't have a homelessness problem.There are as many permanent housing beds as people who need them. The city spends hundreds of millions of dollars to help get people off the streets. Yet there are about 7,500 homeless in the city because of soaring rents and the difficulty of treating substance abuise,mental illness,and other health concerns.
Homelessness problem e_______in San Francisco.
【正确答案】：exists