8184
We also observed that Ca ( 2 + ) is a weak agonist of PTH1R , and Ca ( 2 + ) in millimolar concentration can switch PTH ( 1 - 34 ) from an inverse agonist to an agonist .
 Chemical: Ca ( 2 + ); Chemical: Ca ( 2 + )
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 ( 2 + ); Chemical: Ca ( 2 + )