18366
Next suppose that " x " , " y " are points in a Hadamard space , and let δ ( " s " ) be the geodesic through " x " with δ ( 0 ) = " y " and δ ( " t " ) = " x " , where " t " = " d " ( " x " , " y " ) .
 Hadamard
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hadamard