Assertion: giraffe's heart | /r/HasProperty | necessary
Facets:
value: to pump blood
type: PURPOSE
Source sentences:
text: For example, a large heart and lungs are necessary to pump blood to the brain and expel used air from the windpipe.
text: Such an incredible heart is necessary to pump blood more than two metres to the brain.
text: Weighing up to 25 pounds, a large heart is necessary to pump enough blood to the brain.