1667
Most of the city 's natural watercourses , such as Islais Creek and Mission Creek , have been culverted and built over , although the Public Utilities Commission is studying proposals to daylight or restore some creeks .
 location: Islais Creek; location: Mission Creek; organization: Public Utilities Commission
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 location: Islais Creek; location: Mission Creek; organization: Public Utilities Commission