  We present a measurement of the electron spectrum from inclusive semileptonic
{\it B} decay, using 5.1 fb$^{-1}$ of $\Upsilon(4S)$ data collected with the
Belle detector. A high-momentum lepton tag was used to separate the
semileptonic {\it B} decay electrons from secondary decay electrons. We
obtained the branching fraction, ${\cal B}(B\to X e^+ \nu) = (10.90 \pm 0.12
\pm 0.49)%$, with minimal model dependence.
  From this measurement, we derive a value for the Cabibbo-Kobayashi-Maskawa
matrix element $|V_{cb}| = 0.0408 \pm 0.0010 {\rm (exp)} \pm 0.0025{\rm (th)}$.
