private String purge(String text) {
		StringBuilder sb = new StringBuilder();
		String[] lines = text.split("\n");
		
		for(String line : lines) {
			if( line.length() > 0 && Character.isUpperCase(line.charAt(0)) && ( line.endsWith(".") || line.endsWith("?") || line.endsWith("!")) ) {
				sb.append(line + "\n");
			}
		}
		
		return sb.toString();		
	}