diff --git a/src/guides/bioinformatics/filtering-and-subsampling.rst b/src/guides/bioinformatics/filtering-and-subsampling.rst
index c87e592c..cfdbefab 100644
--- a/src/guides/bioinformatics/filtering-and-subsampling.rst
+++ b/src/guides/bioinformatics/filtering-and-subsampling.rst
@@ -116,9 +116,9 @@ Subsampling within ``augur filter``
 
 Another common filtering operation is subsetting of data to achieve a more
 even spatio-temporal distribution or to cut-down data set size to more
-manageable numbers. The filter command allows you to select a specific number of
-sequences from specific groups, for example one sequence per month from each
-country:
+manageable numbers. The filter command allows you to partition the data into
+groups based on column values and sample uniformly. For example, target one
+sequence per month from each country:
 
 .. code-block:: bash