8739
Superconductivity in the cuprate YBa ( 2 ) Cu ( 3 ) O ( 7 ) ( YBCO ) persists up to huge magnetic fields ( B ) up to several tens of Teslas , and sensitive direct current ( dc ) superconducting quantum interference devices ( SQUIDs ) can be realized in epitaxially grown YBCO films by using grain boundary Josephson junctions ( GBJs ) .
 Chemical: YBa ( 2 ) Cu ( 3 ) O ( 7 ); Chemical: YBCO; Chemical: YBCO
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: YBa ( 2 ) Cu ( 3 ) O ( 7 ); Chemical: YBCO; Chemical: YBCO