Update README.md

README.md

@@ -40,7 +40,9 @@ pretty_name: Crowdsourced high-quality Colombian Spanish speech dataset.
 
 ### Dataset Summary
 
-Crowdsourced high-quality Colombian Spanish speech dataset. This dataset, originally collected by Google, provides 4,903 high-quality utterances, representing 7.58 hours of audio specifically from Colombian Spanish speakers.
+This dataset is a modified version of [Crowdsourced high-quality Colombian Spanish speech dataset](https://www.openslr.org/72/). We added a new `phonemes_ipa` column, which contains phonemized sentences in the IPA format. We use [babygruut](https://github.com/bookbot-hive/babygruut) to phonemize the sentences. 
+This dataset, originally collected by Google, provides 4,903 high-quality utterances, representing 7.58 hours of audio specifically from Colombian Spanish speakers.
+
 
 ### Languages