Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Problem:David Sive ( September 22 , 1922 – March 12 , 2014 ) was an American lawyer , environmentalist , and professor of environmental law .
Solution:
David Sive ( September 22 , 1922 – March 12 , 2014 ) was an attorney , environmentalist , and professor of environmental law , who has been recognized as a pioneer in the field of United States environmental law .