> In determining whether the use made of a work in any particular case is a fair use the factors to be considered shall include:
> * the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes;
> * the nature of the copyrighted work;
> * the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and
> * the effect of the use upon the potential market for or value of the copyrighted work.
> In determining whether the use made of a work in any particular case is a fair use the factors to be considered shall include:
> * the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes;
> * the nature of the copyrighted work;
> * the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and
> * the effect of the use upon the potential market for or value of the copyrighted work.