5379
Dwyfach appears to take her name from the small Dwyfach ( Welsh : little Dwy ) River of Gwynedd ( until 1974 , Caernarvonshire ) that flows into Cardigan Bay ; Dwyfan would then derive from the river it enters , the Dwyfawr or Dwyfor ( Welsh : great Dwy ) .
 location: Gwynedd
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Gwynedd