Assertion: graph's cycle | /r/HasProperty | studied by thomas kirkman
Facets:
value: despite being named after hamilton
type: OTHER
value: a year earlier
type: TEMPORAL
Source sentences:
text: Despite being named after Hamilton, Hamiltonian cycles in polyhedra had also been studied a year earlier by Thomas Kirkman, who, in particular, gave an example of a polyhedron without Hamiltonian cycles.