29138.php

<?php
  set_include_path(get_include_path() . PATH_SEPARATOR . '../lib/');
  require_once "EasyRdf.php";

  EasyRdf_Namespace::set('ont', 'http://www.semanticweb.org/augunipov/ontologies/m_ontology#');

  $graph = new EasyRdf_Graph();
  $graph->parseFile('29138.ttl', 'turtle');
  
  echo "<ul>\n";
  foreach($graph->allOfType('ont:Book') as $book) {
      if (preg_match('/Yankee/i', $book->get('ont:bookHasTitle'))) {
          echo "<li>Author: ".$book->get("^ont:authorHasAuthorshipOfBook/ont:authorName")."</li>\n";
      }
  }
  echo "</ul>\n";

29138.ttl

@prefix ont: <http://www.semanticweb.org/augunipov/ontologies/m_ontology#> .

<http://example.com/author1>
  a ont:Author;
  ont:authorName "Mary Ann Rodman";
  ont:authorHasAuthorshipOfBook <http://example.com/book1> .

<http://example.com/author2>
  a ont:Author;
  ont:authorName "William Boyd";
  ont:authorHasAuthorshipOfBook <http://example.com/book2> .

<http://example.com/author3>
  a ont:Author;
  ont:authorName "felipezkn";
  ont:authorHasAuthorshipOfBook <http://example.com/book3> .

<http://example.com/book1>
  a ont:Book;
  ont:bookhasIsbn <urn:isbn:0746067496>;
  ont:bookHasTitle "Yankee Girl" .

<http://example.com/book2>
  a ont:Book;
  ont:bookhasIsbn <urn:isbn:0140093478>;
  ont:bookHasTitle "On the yankee station" .

<http://example.com/book3>
  a ont:Book;
  ont:bookHasTitle "How to run a query against a local RDF file" .