Subject	electromagnetic wave
Predicate	travel in
Object	vacuum
Modality	Modality Occurrences TBC[same speed] 2 some[subj/all] 1 some[subj/we know that] 1
Polarity	POSITIVE
Plausibility	0.9302
Neighborhood Sigma	0.9302
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source electromagnetic waves travel at the same speed in a vacuum 1 Google Autocomplete all electromagnetic waves travel at the same speed in a vacuum 1 Google Autocomplete we know that electromagnetic waves can travel in a vacuum 1 Google Autocomplete electromagnetic waves travel in vacuum 2 Google Autocomplete electromagnetic waves travel in a vacuum 1 Google Autocomplete