getPlacesForAddress.m

// find the three nearest Italian restaurants within five kilometers of an address

SGPlacesQuery *query = [SGPlacesQuery queryWithAddress:@"41 Decatur St, San Francisco, CA"];

[query setCategories:[NSArray arrayWithObjects:SGPlacesCategoryRestaurant, SGPlacesCategoryFood, nil]];
[query setSearchString:@"Italian"];
[query setRadius:5.0];
[query setLimit:3];

[client getPlacesForQuery:query
                 callback:[SGCallback callbackWithSuccessBlock:
                           ^(id response) {
                               // you've got Places!
                               // to create an array of SGPlace objects...
                               NSArray *places = [NSArray arrayWithSGCollection:response
                                                                           type:SGCollectionTypePlaces];
                           } failureBlock:^(NSError *error) {
                               // handle failure
                           }]];