12383
Predictably pH - dependent surface recruitment is associated with the expected fingerprint europium and terbium emission characteristics .
 Chemical: europium; Chemical: terbium
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: europium, terbium 
Answer:
 Chemical: europium; Chemical: terbium