Assertion: hydrogen | /r/DistinctFrom | all the other group 1 elements
Facets:
value: physically
type: MANNER
value: very
type: DEGREE
Source sentences:
text: Hydrogen is a special case, because even though it does have the defining characteristic of all group 1 elements, which is that it has one valence electron, it is physically very different from all the other group 1 elements.