Assertion: soccer ball | /r/HasProperty | flat
Facets:
value: once upon a time
type: TEMPORAL
value: with high pressure air
type: OTHER
Source sentences:
text: If a soccer ball is flat because it has been sitting unused and has lost pressure, reinflation is the answer.
text: A soccer ball is hollow and inflated with high pressure air, so the weight is distributed around the outside of the ball.
text: When a soccer ball is inflated with less than 8.5 psi, it is more difficult to kick and send down the field and is considered too flat.
text: Once upon a time, soccer balls (or footballs, depending on where you hail from) were inflated pig bladders wrapped in leather.