jonase/learndatalogtoday — pull request #7 by clifton (2013-08-12 17:12:46+00:00)
Title: chapter 6 should reference :person/born

The following code is wrong and I had to cheat (it should use `:person/born`)

```clojure
[:find ?name
:in $ ?age ?today
:where
[?p :person/name ?name]
[?p :person/birth ?birth]
[(tutorial.fns/age ?birth ?today) ?age]]
```

However the example code on the same page references `:person/birth`

```clojure
[:find ?age
:in $ ?person ?today
:where
[?p :person/name ?name]
[?p :person/birth ?birth]
[(tutorial.fns/age ?birth ?today) ?age]]
```