Assertion: spider's web | /r/CapableOf | cover some 4 acres of a building
Facets:
value: with spider densities in some areas
type: OTHER
Source sentences:
text: In 2009, workers at a Baltimore Wastewater Treatment Plant called for help to deal with over 100 million orb-weaver spiders, living in a community that managed to spin a phenomenal web that covered some 4 acres of a building with spider densities in some areas reaching 35,176 spiders per cubic meter.