Assertion: hydrocarbon's structure | /r/MadeOf | a ring of six carbon atoms
Facets:
value: with alternating single and double bonds
type: OTHER
Source sentences:
text: In 1865, the German chemist Friedrich August Kekulé published a paper in French (for he was then teaching in Francophone Belgium) suggesting that the structure contained a ring of six carbon atoms with alternating single and double bonds.