Q: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
The trees for making Tasmanian oak are " Eucalyptus regnans " , " Eucalyptus obliqua " or " Eucalyptus delegatensis " .
A:
Tasmanian oak refers to the hardwood produced by three trees : " Eucalyptus regnans " , " Eucalyptus obliqua " or " Eucalyptus delegatensis " , when it is sourced from the Australian state of Tasmania .