Subject	rubidium
Predicate	has_property
Object	kept
Modality	Modality Occurrences TBC[kept in sealed glass tube] 1
Polarity	POSITIVE
Plausibility	0.0360
Neighborhood Sigma	0.0420
Local Sigma	0.0364
Example Sentences	Sentence Occurrences Source rubidium is kept 1 Google Autocomplete rubidium and cesium are kept in a sealed glass tube 1 Answers.com Questions