| http://www.w3.org/ns/prov#value | - Whenever we visited Leo (and we moved near him when I was 6, so I saw him often after that) he lectured me on physics, chemistry, biology, mathematics and what-not ... and he had an endless reserve of stories about experiments he would done, famous and non-famous scientists he would worked with, and so forth.Leo taught me some practical things about science and math, such as tricks for doing mental arithm
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