freebase

vi.

加热吸用精炼可卡因；

Freebase Documentation
Freebase: A Shared Database of Structured General Human Knowledge.
Semantic parsing on freebase from question-answer pairs
Freebase:a collaboratively created graph database for structuring human knowledge
Question Answering over Freebase with Multi-Column Convolutional Neural Networks
FACC1: Freebase annotation of ClueWeb corpora, Version 1 (Release date 2013-06-26, Format version 1, Correction level 0)
Information Extraction over Structured Data: Question Answering with Freebase
Heterosexual transmission of HIV-1 associated with the use of smokable freebase cocaine (crack)
Design Strategies for Solid-State Supramolecular Arrays Containing Both Mixed-Metalated and Freebase Porphyrins
Supramolecular Chirogenesis in Zinc Porphyrins:? Investigation of Zinc-Freebase Bis-Porphyrin, New Mechanistic Insights, Extension ...