RDF reification of DBpedia TQL files along with template and attribute fields

tql2reif.sh

#! /bin/bash
#The script expects a single tql file 
if [ "$#" -ne 1 ]; then
    echo "tql2rec - generates rectified statements from DBpedia tql files including template and infobox attributes."
    echo "Usage: tql2rec <tql-file-to-be-used>"
    exit 1;
fi
#Regex used to extract the template and the property from the context.
regex1='.*<(.*)&template=(.*)&property=(.*)&split(.*)>'
#Sometimes split parameter is not present.
regex2='.*<(.*)&template=(.*)&property=(.*)>'
while IFS='' read -r line || [[ -n "$line" ]]; do
# clean the variable
    source='';
    template='';
    property='';

# uuid for each rectified statement
    uuid=$(uuidgen);
# Tokenize the line by space, we can easily identify subject, and predicate with this. But this doesn't work for objects.
    arr=($line)
 
    if [[ $line =~ $regex1 ]]; then 
       source=${BASH_REMATCH[1]};
       template=${BASH_REMATCH[2]}; 
       property=${BASH_REMATCH[3]};
    elif [[ $line =~ $regex2 ]]; then
       source=${BASH_REMATCH[1]};
       template=${BASH_REMATCH[2]}; 
       property=${BASH_REMATCH[3]};
    else 
       #regex didn't match, we miss data but will skip without rectification
       continue;
    fi
    echo "_:$uuid <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/1999/02/22-rdf-syntax-ns#Statement> . "
    echo "_:$uuid <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ${arr[0]} . "
    echo "_:$uuid <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> ${arr[1]} . "
    echo "_:$uuid <http://www.w3.org/ns/prov#wasDerivedFrom> <$source> . "
    echo "_:$uuid <http://dbpedia.org/x-template> \"$template\" . "
    echo "_:$uuid <http://dbpedia.org/x-attribute> \"$property\" . "
done < "$1"