Assertion: historian | /r/CapableOf | understand the period
Facets:
value: under study
type: LOCATION
value: by looking at all possible outcomes
type: MANNER
value: properly
type: MANNER
Source sentences:
text: Trevor-Roper said historians could properly understand the period under study only by looking at all possible outcomes and all sides; historians who adopted Carr's perspective of only seeking to understand the winners of history and treating the outcome of a particular set of events as the only possible outcomes, were "bad historians".