sentences: a office is a mean of capital & energy is used for heating a building by a heating system ->  energy is used for heating a home  solar energy is a renewable / inexhaustible resource & solar energy is a kind of energy -> solar matter is a mean of renewable feldspar and a mean of matter solar energy is a kind of renewable resource and a kind of energy  matter is used for solid a office & solar energy is a kind of renewable resource and a kind of energy -> solar energy is a kind of renewable resource that is used for heating a home