As alluded to above, factual footnotes are far from homogeneous and vary in their content and size. The distribution of footnote length is extremely skewed (see left side in Figure 2). While a small number of footnotes exceed 500 tokens, approximately 93% of footnotes are shorter than 50 words. This reflects a high degree of variability in the length of annotations, where most footnotes remain brief, but a handful serve as more detailed, extensive commentary.