Subject	hot air balloon
Predicate	be used during
Object	world war 1
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.1623
Neighborhood Sigma	0.1623
Local Sigma	0.5028
Example Sentences	Sentence Occurrences Source hot air balloons were used during world war 1 2 Answers.com Questions