Many titans of the 21st century sit on mountains of what are known as unrealized gains, the total size of which fluctuates each day as stock prices rise and fall. I don't think it's germane. By the end of 2018, the 25 were worth $1.1 trillion. I enjoy the competition. Lets just say an average growth of about 6%.
Many titans of the 21st century sit on mountains of what are known as used heroin.
( z0 sit :ARG1 ( z1 tit :quant ( z2 many ) :time ( z3 date-entity :century 21 ) ) :ARG2 ( z4 mountain :cxnsistof ( z5 thing :ARG1-of ( z6 know :ARG2 ( z7 heroin :ARG1-of ( z8 use ) ) ) ) ) )
(z0 / sit-01
    :ARG1 (z1 / tit
              :quant (z2 / many)
              :time (z3 / date-entity
                        :century 21))
    :ARG2 (z4 / mountain
              :consist-of (z5 / thing
                              :ARG1-of (z6 / know-02
                                           :ARG2 (z7 / heroin
                                                     :ARG1-of (z8 / use-01))))))
Many titans of the 21st century sit on mountains of what are known as used heroin .
z1 :quant z2
z3 :century 0
z1 :time z3
z0 :ARG1 z1
z0 :ARG2 z4
z4 :consist-of z5
z5 :ARG1-of z6
z7 :ARG1-of z8
z6 :ARG2 z7