August 2009
Intermediate to advanced
456 pages
14h 8m
English
Content preview from Foundations of Semantic Web Technologies
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Solutions to the Exercises 395
Solution to Exercise 7.3
First query:
BGP(<http://example.org/Sun>
<http://example.org/satellite> ?satellite.)
satellite
ex:Mercury
ex:Venus
ex:Earth
ex:Mars
BGP(?satellite <http://example.org/satellite> ?object.)
satellite object
ex:Sun ex:Mercury
ex:Sun ex:Venus
ex:Sun ex:Earth
ex:Sun ex:Mars
ex:Earth ex:Moon
ex:Mars ex:Phobos
ex:Mars ex:Deimos
Join(BGP(<http://example.org/Sun>
<http://example.org/satellite> ?satellite.),
BGP(?satellite <http://example.org/satellite> ?object.)
)
satellite object
ex:Earth ex:Moon
ex:Mars ex:Phobos
ex:Mars ex:Deimos
BGP(<http://example.org/Sun>
<http://example.org/satellite> ?object.)
object
ex:Mercury
ex:Venus ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.