Anchor: Migrants from Africa stop to rest in the Balearics, and some stay for the summer.
Entailed: African migrants who rest in the Balearics sometimes stay for summer.
Contradiction: African migrants stay only very briefly in the Balearics.
Contradiction: They hid behind the wall as the men rode by on donkeys. 
Contradiction: Case study methods have been defined.
Contradiction: Three friends are being attacked by a bear.
Contradiction: Friends are paddling on a boat.