257965
DLGs are distributed at three different scales : large-scale , which normally correspond to the USGS 7.5 - by 7.5-minute , 1:24,000 and 1:25,000 - scale topographic quadrangle map series , 1:63,360 - scale for Alaska and 1:30,000 - scale for Puerto Rico ; intermediate scale , which are derived from the USGS 30 - by 60-minute , 1:100,000 - scale map series ; and small-scale , which are derived from the USGS 1:2,000,000 - scale sectional maps of the National Atlas of the United States .
 Alaska, Puerto Rico
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Alaska, Puerto Rico