Assertion: asthma's trigger | /r/HasProperty | allergen
Facets:
Source sentences:
text: The most common triggers include allergens, smoke (from tobacco or other sources), air pollution, non selective beta-blockers, and sulfite-containing foods.
text: Common triggers include exercise, cigarette smoke, colds and flu, and allergens in the air (e.g. grass pollen).
text: These triggers include air pollution, allergens, exercise, infections, emotional upset, or certain foods.
text: Common triggers include allergens, exercise and poor air quality.