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-h1. Tutorial: Querying the Metadata Database
+h1. Querying the Metadata Database
This tutorial introduces the Arvados Metadata Database. The Metadata Database stores information about files in Keep. This example will use the Python SDK to find public WGS (Whole Genome Sequencing) data for people who have reported a certain medical condition.
*This tutorial assumes that you are "logged into an Arvados VM instance":{{site.basedoc}}/user/getting_started/ssh-access.html#login, and have a "working environment.":{{site.basedoc}}/user/getting_started/check-environment.html*
-In tutorial example, three angle brackets (>>>) will be used to denote code to enter at the Python prompt.
+In the tutorial examples, three angle brackets (>>>) will be used to denote code to enter at the interactive Python prompt.
Start by running Python.