Assertion: camel's foot | /r/HasProperty | useful
Facets:
value: for walking on snow
type: PURPOSE
value: for walking on sand
type: PURPOSE
Source sentences:
text: For example, the wide, flat feet that are useful for walking on sand could also have been useful for walking on snow.
text: For example, the wide, flat feet that are useful for walking on sand could also have been useful for walking on snow.