{
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,{ "model": "block/bookshelf/bookshelf1", "weight":50 },
{ "model": "block/bookshelf/bookshelf2", "weight":100 },
{ "model": "block/bookshelf/bookshelf3", "weight":100 },
{ "model": "block/bookshelf/bookshelf4", "weight":35 },
{ "model": "block/bookshelf/bookshelf5", "weight":100 },
{ "model": "block/bookshelf/bookshelf6", "weight":20 },
{ "model": "block/bookshelf/bookshelf7", "weight":15 } ]    }
}
