<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
  <xs:element name="Label">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="Text"/>
        <xs:element ref="Sentences"/>
        <xs:element ref="LabelInteractions"/>
      </xs:sequence>
      <xs:attribute name="drug" use="required"/>
      <xs:attribute name="setid" use="required"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="Text">
    <xs:complexType>
      <xs:sequence>
        <xs:element maxOccurs="unbounded" ref="Section"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="Section">
    <xs:complexType mixed="true">
      <xs:attribute name="id" use="required" type="xs:NMTOKEN"/>
      <xs:attribute name="name" use="required"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="Sentences">
    <xs:complexType>
      <xs:sequence>
        <xs:element maxOccurs="unbounded" ref="Sentence"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="Sentence">
    <xs:complexType>
      <xs:sequence>
        <xs:element ref="SentenceText"/>
        <xs:sequence minOccurs="0">
          <xs:element maxOccurs="unbounded" ref="Mention"/>
          <xs:element maxOccurs="unbounded" ref="Interaction"/>
        </xs:sequence>
      </xs:sequence>
      <xs:attribute name="LabelDrug" use="required"/>
      <xs:attribute name="id" use="required" type="xs:integer"/>
      <xs:attribute name="section" use="required" type="xs:NMTOKEN"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="SentenceText" type="xs:string"/>
  <xs:element name="Mention">
    <xs:complexType>
      <xs:attribute name="code"/>
      <xs:attribute name="id" use="required" type="xs:NCName"/>
      <xs:attribute name="span" use="required"/>
      <xs:attribute name="str" use="required"/>
      <xs:attribute name="type" use="required" type="xs:NCName"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="Interaction">
    <xs:complexType>
      <xs:attribute name="effect"/>
      <xs:attribute name="id" use="required" type="xs:NCName"/>
      <xs:attribute name="precipitant" use="required" type="xs:NCName"/>
      <xs:attribute name="trigger" use="required"/>
      <xs:attribute name="type" use="required"/>
      <xs:attribute name="effectCodeMatch" use="optional"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="LabelInteractions">
    <xs:complexType>
      <xs:sequence minOccurs="0">
        <xs:element maxOccurs="unbounded" ref="LabelInteraction"/>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
  <xs:element name="LabelInteraction">
    <xs:complexType>
      <xs:attribute name="effect"/>
      <xs:attribute name="precipitant" use="required"/>
      <xs:attribute name="precipitantCode" use="required"/>
      <xs:attribute name="type" use="required"/>
    </xs:complexType>
  </xs:element>
</xs:schema>
