# Entity extraction, synonyms

**URL:** <https://forum.rasa.com/t/entity-extraction-synonyms/10054>\
**Category:** Rasa Open Source\
**Created:** [May 21, 2019, 9:23am UTC](https://forum.rasa.com/t/entity-extraction-synonyms/10054 "2019-05-21T09:23:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rbossie](https://avatars.discourse-cdn.com/v4/letter/r/e47774/32.png) [@rbossie](https://forum.rasa.com/u/rbossie)\
**Post date:** [May 21, 2019, 9:23am UTC](https://forum.rasa.com/t/entity-extraction-synonyms/10054/1 "2019-05-21T09:23:29Z")

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I’m trying to map my entities to one value, to fill my slot.

Below you find a part of my intent

> ```
> ## intent: histo_uit
> - historische data importeren uit [unit4](histo_uit:unit4)
> - data importeren uit [unit 4 audition](histo_uit:unit4)
> - gegevens uploaden vanuit [unit 4](histo_uit:unit4)
> - data importeren uit [UNIT4Audition](histo_uit:unit4)
> 
> ```

My nlu config:

```
- name: "tokenizer_whitespace"
- name: "ner_crf"
- name: "intent_featurizer_count_vectors"
- name: "intent_classifier_tensorflow_embedding"
  intent_tokenization_flag: true
  intent_split_symbol: "+"

```

However. when I type: “historische data importeren uit unit 4”, the slot histo\_uit get’s the value unit 4 (with the whitespace) in stead of unit4.

Can someone tell me why it is not working as I expected?

---

<div class="post-metadata">

**Author:** ![rbossie](https://avatars.discourse-cdn.com/v4/letter/r/e47774/32.png) [@rbossie](https://forum.rasa.com/u/rbossie)\
**Post date:** [May 21, 2019, 12:29pm UTC](https://forum.rasa.com/t/entity-extraction-synonyms/10054/2 "2019-05-21T12:29:10Z")

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Found it already, I had to put ner\_synonyms in my nlu config.