diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..87e654b
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+*.csv filter=lfs diff=lfs merge=lfs -text
diff --git a/.gitignore b/.gitignore
index 1a4092d..ee544bd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -223,4 +223,4 @@ tags
 
 
 # End of https://www.gitignore.io/api/vim,macos,emacs,python
-data/
\ No newline at end of file
+
diff --git a/data/answers.csv b/data/answers.csv
new file mode 100644
index 0000000..bb6279d
--- /dev/null
+++ b/data/answers.csv
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:89a474e9ff64d20f8246e26d5ccc51eb4d5f3f96a703a330043c08d945cf84b5
+size 545460453
diff --git a/data/categories.csv b/data/categories.csv
new file mode 100644
index 0000000..74c1ac1
--- /dev/null
+++ b/data/categories.csv
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b95973492ab96c5f2e883eb89e8da36e5569c0d524ab8c46e0a1d9b53e45be29
+size 3441
diff --git a/data/questions.csv b/data/questions.csv
new file mode 100644
index 0000000..768bd16
--- /dev/null
+++ b/data/questions.csv
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e497d952e39171d7b6691e9d1b578b0c9ed96687283ce6ba4766c9fb9b8ad299
+size 116845356
diff --git a/data/users.csv b/data/users.csv
new file mode 100644
index 0000000..2a93010
--- /dev/null
+++ b/data/users.csv
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2e2a492f2c8ed3b2a6548d6305e98d3f671941cadc65b7ba5c7db142c8840aab
+size 4811783