gistfile1.m

- (IBAction)btnConvert:(id)sender {
    
    NSString *urlString = urlField.text;
    answerData = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]];
    html = [[NSString alloc] initWithData:answerData encoding:NSUTF8StringEncoding];
    NSLog(@"Source: %@", html);
    
    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"ansMap\\[\\d+\\] = '(\\w+)'" options:0 error:NULL];
    
    [regex enumerateMatchesInString:html options:0 range:NSMakeRange(0, [html length]) usingBlock:^(NSTextCheckingResult *result, NSMatchingFlags flags, BOOL *stop) {
        NSRange range = [result rangeAtIndex:1];
        NSString *answer = [html substringWithRange:range];
        // do whatever you want with answer
    }];
                        
}