Assertion: standard mouse | /r/HasAspect | two buttons
Facets:
value: toward the front
type: LOCATION
value: to leftclick
type: MANNER
value: to leftright-click
type: MANNER
Source sentences:
text: The standard mouse has two buttons toward the front (to left-click and right-click) and a scroll wheel in the center (to quickly move the screen up and down).