Assertion: coordinate's value | /r/HasProperty | comma
Facets:
Source sentences:
text: Points or coordinates are indicated by writing an opening parenthesis, the x value, a comma, the y value, and a closing parenthesis in that order.
text: Points or coordinates are indicated by writing an opening parenthesis, the x value, a comma, the y value, another comma, the z value, and a closing parenthesis in that order.