Copyright-free (著作権フリー) is a conventional expression extensively used in Japan that the author say their works can be used freely regardless of copyright. It is distinguished from public domain.
... are 65 years of age or older. The median age is 44 years. For every 100 females there are 99.5 males. For every 100 females age 18 and over, there are 88.8 males.
The ...