# Different meta data in ner.correct output - 'spans'.

**URL:** <https://support.prodi.gy/t/different-meta-data-in-ner-correct-output-spans/5373>\
**Category:** Uncategorized\
**Tags:** usage, ner\
**Created:** [February 22, 2022, 10:44am UTC](https://support.prodi.gy/t/different-meta-data-in-ner-correct-output-spans/5373 "2022-02-22T10:44:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![EM22](https://avatars.discourse-cdn.com/v4/letter/e/db5fbb/32.png) [@EM22](https://support.prodi.gy/u/EM22)\
**Post date:** [February 22, 2022, 10:44am UTC](https://support.prodi.gy/t/different-meta-data-in-ner-correct-output-spans/5373/1 "2022-02-22T10:44:56Z")

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Hi,

I noticed that in the ner.correct output, there are two different types of span dictionaries in the meta data.  
Most of the spans have five keys in the dictionary - 'start', 'end', 'token\_start', 'token\_end', 'label',  
but some of them have an additional 3 keys - 'text', 'source', 'input\_hash'.

Why is there a difference? What spans get the additional meta data?

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<div class="post-metadata">

**Author:** ![ines](https://sea2.discourse-cdn.com/flex020/user_avatar/support.prodi.gy/ines/32/3_2.png) [@ines](https://support.prodi.gy/u/ines)\
**Post date:** [February 22, 2022, 5:12pm UTC](https://support.prodi.gy/t/different-meta-data-in-ner-correct-output-spans/5373/2 "2022-02-22T17:12:35Z")

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Hi! Prodigy's JSON format allows attaching arbitrary metadata to the objects and while the extra keys aren't required, they're added by the recipe to the pre-labelled predictions by default. The most relevant one is probably `source`: this tells you where the prediction is coming from, e.g. the spaCy model used to pre-annotate the data. Annotations you add manually in the UI won't have this key. If you don't care about this info, it's also safe to just ignore it 🙂