return true;
if (obj == null)
return false;
if (!(obj instanceof PlainLiteral))
return false;
PlainLiteral other = (PlainLiteral) obj;
if (language == null) {
if (other.getLanguage() != null)
return false;
} else if (!language.equals(other.getLanguage()))
return false;
if (lexical == null) {
if (other.getLexical() != null)
return false;
} else if (!lexical.equals(other.getLexical()))
return false;
return true;
}