Assertion: backstroke's body | /r/CapableOf | move through the water
Facets:
value: forward
type: MANNER
Source sentences:
text: During the stroke, the legs move together in a dolphin kick (imagine a mermaid), the arms move together to push the water downward and backward, and the torso undulates like an earthworm as the body moves forward through the water.
text: D is the constant for the viscosity of the fluid, p is the density of the water, A is the surface area of the body traveling through the water, and v is the velocity of the body.