# data[].attributes.body
#4

Effect of the use upon the potential market for or value of the copyrighted work

# data[].attributes.body
#3
Amount and substantiality of portion used in relation to copyrighted work as a whole

# data[].attributes.body
#2
Nature of the copyrighted work

# data[].attributes.body
#1
"Purpose & character of use, including whether such use is of a commercial nature, or is for nonprofit educational purposes"

# data[].attributes.headline
A public domain is not covered by copyright laws. 

# data[].attributes.subject
A public domain is not covered by copyright laws. 

# data[].attributes.headline
Any work published before 1923 and has expired or for the US government is called a public domain.

# data[].attributes.subject
Any work published before 1923 and has expired or for the US government is called a public domain.

# data[].attributes.headline
The purpose of copyright is to "benefit the public by promoting the progress of science and useful arts

# data[].attributes.subject
The purpose of copyright is to "benefit the public by promoting the progress of science and useful arts