Assertion: jellyfish's sting | /r/CapableOf | produce heart problems
Facets:
Source sentences:
text: Some stings produce more serious reactions, including severe pain, muscle cramps, swelling, or heart problems that can be life-threatening.
text: This is not that unusual for many species of jellyfish and there is little evidence that a sting from a Cannonball jelly will result in heart problems.