Anchor: Gravestones with croses and Arabic inscriptions at the head of the valley remind visitors that many Arabs are Christians.
Entailed: Gravestones with crosses and Arabic inscriptions are reminders that there are many Christian Arabs.
Contradiction: Those gravestones remind us that there are no Arabs who are Christians.
Contradiction: I have seem them undergone changes throughout college. 
Contradiction: A girl rides on a train toy.
Contradiction: Two kids are skiing.
Contradiction: For a year and a half, it produced nothing, so I gave up.