1<element name="base" 2xmlns="http://relaxng.org/ns/structure/1.0"> 3 <choice> 4 <group> 5 <element name="data"> 6 <value>firstValue</value> 7 </element> 8 <oneOrMore> 9 <element name="option"> 10 <element name="value"> 11 <text/> 12 </element> 13 <element name="label"> 14 <text/> 15 </element> 16 </element> 17 </oneOrMore> 18 </group> 19 <group> 20 <element name="data"> 21 <value>secondValue</value> 22 </element> 23 <oneOrMore> 24 <element name="option"> 25 <element name="value"> 26 <text/> 27 </element> 28 <element name="label"> 29 <text/> 30 </element> 31 </element> 32 </oneOrMore> 33 </group> 34 </choice> 35</element> 36