Tree rings and bore holes can only help scientists work out the temperature until about 1000 years ago.
(Tree rings and bore holes; can only help; scientists work out the temperature until about 1000 years ago) Context(Tree rings and bore holes can only help,List([0, 39))):(scientists; work out; the temperature; T:until about 1000 years ago)
Tree rings and bore holes can only help,List([0, 39))
Tree rings and bore holes scientists
can only help work out
scientists work out the temperature until about 1000 years ago
the temperature T:until about 1000 years ago