Assertion: allergy's system | /r/CapableOf | overreact to substance
Facets:
Source sentences:
text: An allergy develops when the immune system overreacts to a substance that is usually harmless.
text: Causes An allergic reaction happens when the immune system overreacts to a substance.
text: An allergy occurs when your body's immune system, which normally fights infection, overreacts to a substance called an allergen.
text: Allergies occur when your immune system overreacts to a substance that normally shouldn't cause a reaction.
text: Allergies develop when a person’s immune system overreacts to substances that are usually harmless.