Full text search with SPARQL queries in Amazon Neptune

As of October 2018, full text search is not supported out of the box in Neptune (Gremlin and SPARQL). I would recommend opening a support case with Neptune to get more info around when to expect this feature.

Neptune integration with Elasticsearch has been release with version 1.0.2.1:

• https://docs.aws.amazon.com/neptune/latest/userguide/engine-releases-1.0.2.1.html

Please refer to this answer for a detailed explanation or check the official documentation.