sentences:  Alan G. Marshall
  
  Alan G. Marshall is an American analytical chemist who has devoted his scientific career to developing a scientific technique known as Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry, which he co-invented.He was born in Bluffton, Ohio, in 1944, and earned his Bachelor's in Chemistry from Northwestern University (1965) and Ph.D. in Chemistry from Stanford University (1970).