13149
In the biological setting , polyphosphates may regulate mineralization by shielding the essential inhibitory substrate pyrophosphate from TNAP degradation , and in the same process , delay the release of phosphate from this source .
 Chemical: polyphosphates; Chemical: pyrophosphate; Chemical: phosphate
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: polyphosphates; Chemical: pyrophosphate; Chemical: phosphate