19109
It is centered on Downtown San Diego and mainly stretches along the city 's coastline , including part of San Diego Bay .
 Downtown San Diego, San Diego Bay
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Downtown San Diego, San Diego Bay