You will be given a definition of a task first, then some input of the task.
In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.

the foundations of quantum mechanics were established during the first half of the twentieth century by werner heisenberg , max planck , louis de broglie , albert einstein , niels bohr , erwin schrödinger , max born , john von neumann , paul dirac , wolfgang pauli , david hilbert , and others.
Output:
the base of quantum mechanics were established during the first half of the 1900s by werner heisenberg , max planck , louis de broglie , albert einstein , niels bohr , erwin schrödinger , max born , john von neumann , paul dirac , wolfgang pauli , david hilbert , and others.