2 Fine-grained IS is a prerequisite to full bridging/comparative anaphora resolution, and therefore necessary to fill gaps in entity grids (Barzilay and Lapata, 2008) based on coreference only.
examples 1 and 2 do not exhibit any coreferential entity coherence but coherence can be established when the comparative anaphor others is resolved to others than freeway survivor Buck Helm, and the bridging anaphor the streets is resolved to the streets of Oranjemund, respectively.