And where a person might take several years to find a way to build an oriole's nest or beaver's dam -- no oriole or beaver could ever learn such things at all, without the ancient nest- 
(a person; could learn at all; T:ever) (a person; might take; several years; to find a way) Context(a person might take,List([10, 29))):(a person; might take several years to find; a way to build an oriole's nest or beaver's dam -- no oriole or beaver)
a person might take,List([10, 29))
a person a person a person
could learn at all might take might take several years to find
T:ever
several years to find a way
a way to build an oriole's nest or beaver's dam -- no oriole or beaver