辨析下列从句是同位语从句还是定语从句。

a．John always tells lies, which his parents find strange．

b．The news that we are invited to the meeting is very encouraging．

c．The news that you heard isn't true．

d．They have no idea why she left．

e．That's the hotel where they stayed last night．

f．Now we have little idea how they lived through the war．

以上从句属于同位语从句的是________。