3689A Appendix
A.1 Data
A.1.1 Evaluation Data Statistics
For WebQuestionsSP, we mapped question entities
and answer entities to their Wikidata ids. 87.9%
of the questions are answerable by at least one an-
swer entity that is mappable to Wikidata. For all
questions in FreebaseQA there exists at least one
relational path in Freebase between the question en-
tity ei and the answer eans. The path must be either
a one-hop path, or a two-hop path passing through
a mediator (CVT) node, and is veriﬁed by human
raters. 72% of the question entities and 80% of
the answer entities are mappable to Wikidata, and
91.7% of the questions are answerable by at least
one answer entity that is mappable to Wikidata.

FreebaseQA

Train
Dev
Test
Train
WebQuestionsSP Dev
Test

Full

Wikidata
Dataset Answerable
20358
3994
3996
2798
300
1639

12535
2464
2440
1388
153
841
Adaptable and Interpretable Neural Memory Over Symbolic Knowledge