Objective-C: NSLinguisticTagger "new york" vs "New York"

I just started playing around with NSLinguisticTagger basing my code on this blog: NSLinguisticTagger @ NSHipster.com

NSLinguisticTaggerOptions options = NSLinguisticTaggerOmitWhitespace | NSLinguisticTaggerOmitPunctuation | NSLinguisticTaggerJoinNames;
NSLinguisticTagger *tagger = [[NSLinguisticTagger alloc] initWithTagSchemes: [NSLinguisticTagger availableTagSchemesForLanguage:@"en"] options:options];
tagger.string = question;
[tagger enumerateTagsInRange:NSMakeRange(0, [question length]) scheme:NSLinguisticTagSchemeNameTypeOrLexicalClass options:options usingBlock:^(NSString *tag, NSRange tokenRange, NSRange sentenceRange, BOOL *stop) {
NSString *token = [question substringWithRange:tokenRange];
NSLog(@"%@: %@", token, tag); }];

When I run this with question = @"Weekend in New York", "New York" gets tagged as PlaceName which is great. But when I run this with question = @"Weekend in new york", "new" gets tagged as "Adjective" and "york" gets tagged as PlaceName. Is there any way to get around this such that "New York" and "new york" both get tagged as PlaceName?

I'm totally new to this linguistics thing.