19202
X - ray diffraction showed a d - spacing of 44 . 15 A ( different from 45 . 2 A reported for Ca ( Pal ) 2 ) , and infrared spectroscopy confirmed the presence of a hydroxy group .
 Chemical: Ca ( Pal ) 2; Chemical: hydroxy
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Ca ( Pal ) 2; Chemical: hydroxy