Assertion: crab's family | /r/MadeOf | freshwater crabs
Facets:
value: mostly
type: DEGREE
Source sentences:
text: Many crabs belonging to the family Potamidae, which contains mostly freshwater crabs, have developed a semiterrestrial (for instance the genus Nanhaipotamon) to terrestrial life history, and are sometimes independent of fresh water for reproduction (for instance the genus Tiwaripotamon).