Assertion: flue | /r/HasProperty | straight
Facets:
value: to enable the best draft
type: PURPOSE
value: usually
type: DEGREE
Source sentences:
text: Most flues are straight as this enables the best draft.
text: Flues are usually straight, as this provides the best draft, ensuring that there is a steady flow of unwanted material out of the chimney.
text: For a fire place, the flue is located within the chimney and are straight to enable the best draft.
text: Just by looking up with a mirror or camera, if the flue is straight, you should see daylight.