Anchor: Backfill Techniques Techniques used in cumulative case studies to collect information needed if the study is to be usable for aggregation; these techniques include, for example, obtaining missing information from the authors on how instances studied were identified and on the bases for instance selection.
Entailed: Backfill techniques can be used to gather information on a case study so that it can be analysed in conjunction with other studies.
Contradiction: Case studies performed by different researches using different techniques cannot be compared or combined to reach useful conclusions. 
Contradiction: The Collegiate Church was designed as simply as possible, four walls and a roof.
Contradiction: The White Virgin is supposed to be French.
Contradiction: A dog is walking through a field in summer.
Contradiction: Kaufman's part in bringing about his own decline is downplayed.