However, race is simply a classification based on physical traits, such as color of skin and shape of eyes and nose.
(race; is simply; a classification based on physical traits, such as color of skin and shape of eyes and nose) (a classification; based; on physical traits, such as color of skin and shape of eyes and nose)
race a classification
is simply based
a classification based on physical traits, such as color of skin and shape of eyes and nose
on physical traits, such as color of skin and shape of eyes and nose