Use #gravity and #water and a #generator to make #electricity. A
  water #blackhole safe #energy. Invented in 2009. Smart! #Vortex
  [vine id = "MPuBA7hi2wl"]
  Use #gravity and #water and a #generator to make #electricity. A
  water #blackhole safe #energy. Invented in 2009. Smart! #Vortex

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