Premise: Helen Gardner (art historian) . From the frustration of not being able to find a comprehensive textbook that had a broad enough coverage in art history , she resolved the problem by writing such book herself , which resulted in a popular art history textbook used for decades , Art Through the Ages . Her major work , Art Through the Ages ( 1926 ) , was the first single-volume textbook to cover the entire range of art history from a global perspective .
Hypothesis: Helen Gardner had knowledge of art history.
Label: ENTAILMENT