Assertion: column | /r/HasProperty | city
Facets:
Source sentences:
text: In the phone book example with a composite index created on the columns ( city, last_name, first_name ), if we search by giving exact values for all the three fields, search time is minimal—but if we provide the values for city and first_name only, the search uses only the city field to retrieve all matched records.
text: So you add the last name to the “Last Name” column, the city to the “City” column, etc.