Assertion: skateboarder's foot | /r/CapableOf | stand on the truck
Facets:
Source sentences:
text: A 50/50 truckstand is when the board is balanced nearly vertical with the back foot standing on the truck and your front hand holding up the nose.
text: The rider starts from a 50/50, "throws" the board over the foot that stands on the truck and jumps up.