[lemma=not] [tag=DT] [word=new] [word=□]
[lemma=not] [tag=DT] [word=new] [word=concept]
[lemma=not] [tag=DT] [word=new] [word=new]
Educational reform is not a new concept , but there has been a renewed emphasis on systemic efforts to improve educational opportunities for all students as a race-neutral approach to achieving diversity . Generated content is not a new concept - it already plays an important role in the list mechanisms of HTML ; in CSS it has the potential to be very useful in Aural and other rendering media as well . Firstly , homeland security is not a new concept for NATO . Biological control is not a new concept , but for many reasons it is gaining interest for control of livestock ectoparasites .