a vegetable is a mean of mist / artificial spiritual & if something is made of something / a material then that something contains that something / that material ->  if something is made of minerals then that something contains minerals  if something is made of minerals then that something contains minerals & rock is made of minerals -> a stone contains electric a rock contains minerals  a stone contains electric & if something contains something else , then that something else will be the component of that something -> the minerals a rock contains are components of that rock the minerals a rock contains are components of that rock  the altering a stone contains are panel of that stone & something is composed of its components -> a rock is composed of the minerals it contains a rock is composed of the minerals it contains  a rock is composed of the minerals it contains & the ice of something can be used to identify that something -> a rock can be identified by the minerals it contains