text: Bjorken and E. A. Paschos created a model of how these entities interact with high-energy electrons.  
full_question: Bjorken and E. A. Paschos created a model of how these entities interact with high-energy electrons.  That approach used Feynman's model that these objects are composed of point-like constituents called "partons".  The name, meaning massive, was proposed by Lev Okun in 1962 to distingush them from leptons.  Consisting of two or more quarks bound by the strong force, for ten points, name this general class of particles that includes mesons and baryons like protons and neutrons.
first_sentence: Bjorken and E. A. Paschos created a model of how these entities interact with high-energy electrons.  