900
The canal was to be built as a narrow canal , but in 1775 , nine shareholders offered to fund the extra cost of making it a broad canal from Retford to Stockwith .
 Retford, Stockwith
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Retford, Stockwith