Assertion: tourmaline | /r/AtLocation | the literature
Facets:
value: further
type: DEGREE
Source sentences:
text: It has further been described in the literature that those having permanent electric poles have not yet been found in ferroelectric substances.
text: It has further been described in the literature that those having permanent electric poles have not yet been found in ferroelectric substances.
text: It has further been described in the literature that those having permanent electric poles have not yet been found in ferroelectric substances.