N3 question

Two questions:
1)

@prefix log: <http://www.w3.org/2000/10/swap/log#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
{ 
  <http://example.org/liar> 
       log:implies { 
    <http://example.org/noone> a owl:Nothing .
  } . 
} owl:sameAs <http://example.org/liar> .
<http://example.org/liar> a log:Truth ?

2)
Have I made any syntax errors?

Jeremy