Daniel Deutch, Nave Frost, Amir Gilad: Provenance for Natural Language Queries. PVLDB 10(5) 2017  #6.3 Adriane Chapman, H. V. Jagadish: Why not? SIGMOD 2009 Paper Project Proposals 30 706.015 Introduction

unnecessary here. try { emptyStack.pop(); fail(); } catch (NoSuchElementException expected) { } 6.3 Static members: qualified using class When a reference to a static class member must be qualified