tokens: I am running sympy 0.7.3 , ipython3 1.1 , matplotlib 1.3.1 , numpy 1.7.1 , scipy 0.12.0 on a 64-bit Ubuntu 13.10 install .
ner_tags: O O O B-Library B-Version O B-Application B-Version O B-Library B-Version O B-Library B-Version O B-Library B-Version O O O B-Operating_System B-Version O O