Assertion: alluvial fan's floor | /r/HasProperty | flatter
Facets:
Source sentences:
text: Alluvial fans are also found on Mars descending from some crater rims over their flatter floors.
text: Alluvial fans are also found on Mars descending from some crater rims over their flatter floors.
text: Alluvial fans are also found on Mars descending from some crater rims over their flatter floors.
text: Alluvial fans are also found on Mars descending from some crater rims over their flatter floors.