Assertion: obstruction's cause | /r/HasProperty | mechanical
Facets:
Source sentences:
text: The different causes are either mechanical or non-mechanical.
text: Further treatment depends on the underlying cause of the obstruction: Mechanical obstruction
text: The different causes are either mechanical or non-mechanical.
text: Similarly, if the cause is mechanical, it may be possible to resect the mass (e.g. colloid cyst).