Assertion: salmon's river | /r/HasProperty | original
Facets:
Source sentences:
text: When they are ready to return to their original river, they have entered the grilse stage, where it is believed they use the chemical signature of their old home to return to it.
text: When they are ready to return to their original river, they have entered the grilse stage, where it is believed they use the chemical signature of their old home to return to it.