Assertion: spider | /r/HasProperty | cause
Facets:
Source sentences:
text: Data are usually only kept on bites from spiders that are potentially deadly or cause severe reactions and these data are not recorded consistently at a national or international level.
text: Black widow spiders’ webs are made of superior silk threads, as compared to the webs of other spiders, which is the reason for the use of this silk thread to make body armor and high-tech athletic clothing.