Assertion: table | /r/HasProperty | a-heads
Facets:
value: often
type: TEMPORAL
Source sentences:
text: A table of contents usually includes the titles or descriptions of first-level headings (chapters in longer works), and often includes second-level headings (sections or A-heads) within the chapters as well, and occasionally even includes third-level headings (subsections or B-heads) within the sections as well.