TASK DEFINITION: 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.
PROBLEM: Many grevilleas interbreed freely , and some specially picked hybrids have been grown for sale .

SOLUTION: Many grevilleas have a propensity to interbreed freely , and extensive hybridisation and selection of horticulturally desirable attributes has led to the commercial release of many named cultivars .

PROBLEM: F.C. Barcelona is a Spanish football club from Barcelona , Catalonia .

SOLUTION: Futbol Club Barcelona ( -RSB- ) , commonly referred to as Barcelona and colloquially known as Barc ̧ a ( -RSB- ) , is a Spanish professional football club based in Barcelona , Catalonia , Spain .

PROBLEM: The trees for making Tasmanian oak are " Eucalyptus regnans " , " Eucalyptus obliqua " or " Eucalyptus delegatensis " .

SOLUTION:
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 .