Assertion: subtitle | /r/HasProperty | included with the title
Facets:
value: in the <source>
type: LOCATION
Source sentences:
text: The subtitle may be included with the title in the <article-title> element (or the <source> element for book titles, proceedings titles, and other titles), or
text: The subtitle may be included with the title in the <article-title> element (or the <source> element for book titles, proceedings titles, and other titles), or