Assertion: chronic obstructive pulmonary disease | /r/HasProperty | a group of diseases
Facets:
Source sentences:
text: Chronic obstructive pulmonary disease (COPD) is a group of diseases that cause airflow blockage and breathing-related issues.
text: Chronic obstructive pulmonary disease (COPD) is a group of diseases that affect your lungs and airways, causing breathing difficulties.