Question: When did  Jerry Nelson (the one that is educated at California Institute of Technology) receive the Benjamin Franklin Medal (the one that was received by Thomas Alva Edison)?
Choices:
1877-01-01
1948
2007-03-01
1970-05-06
1973-01-01
1933-01-30
2012-01-01
2015-03-01
2006-05-17
2006-12-31