Assertion: tennis racket's head | /r/HasProperty | measured as the surface area
Facets:
Source sentences:
text: Head size : The head is measured as the surface area contained by the frame.
text: : The head is measured as the surface area contained by the frame.
text: Head size : The head is measured as the surface area contained by the frame.
text: : The head is measured as the surface area contained by the frame.