sentences:  Ralph Beebe Blackman
  
  Ralph Beebe Blackman (August 29, 1904 – May 24, 1990) was an American mathematician and engineer who was among the pioneers of the information age along with Claude E. Shannon, Hendrik Wade Bode, and John Tukey.Blackman graduated from the California Institute of Technology in 1926 and started work at Bell Laboratories the same year.