Returns the URL value of the specified Property from a [[Thing]]. If the Property is not present or its value is not of type URL, returns null. If the Property has multiple URL values, returns one of its URL values.
The [[Thing]] to read a URL value from.
The Property whose URL value to return.
A URL value for the given Property if present, or null if the Property is not present or the value is not of type URL.
Returns the URL value of the specified Property from a [[Thing]]. If the Property is not present or its value is not of type URL, returns null. If the Property has multiple URL values, returns one of its URL values.