Anchor: Well-tended olive trees never die but sprout new wood when an old trunk decays, so these ancient trees might have been here when Jesus walked in the garden.
Entailed: The trees could have been around in Jesus's time.
Contradiction: The trees die every 10 years or so.
Contradiction: You should always know with these things.  
Contradiction: We have a good servant.
Contradiction: a man shaving
Contradiction: A group gathers in front of a castle.