6238
The lanthanide - binding nucleoside was incorporated into DNA oligonucleotides and shown to selectively bind one equivalent of europium ions .
 Chemical: lanthanide; Chemical: nucleoside; Chemical: europium
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: lanthanide, nucleoside, europium 
Answer:
 Chemical: lanthanide; Chemical: nucleoside; Chemical: europium