Reword docs and revert some changes.

object_detection/g3doc/preparing_inputs.md

@@ -7,10 +7,10 @@ TFRecords.
 
 ## Generating the PASCAL VOC TFRecord files.
 
-The raw 2012 PASCAL VOC data set can be downloaded
-[here](http://host.robots.ox.ac.uk/pascal/VOC/voc2012/VOCtrainval_11-May-2012.tar),
-or by using the command below.
-Extract the tar file and run the `create_pascal_tf_record` script:
+The raw 2012 PASCAL VOC data set is located
+[here](http://host.robots.ox.ac.uk/pascal/VOC/voc2012/VOCtrainval_11-May-2012.tar).
+To download, extract and convert it to TFRecords, run the following commands
+below:
 
 ```bash
 # From tensorflow/models
@@ -29,12 +29,15 @@ python object_detection/create_pascal_tf_record.py \
 You should end up with two TFRecord files named `pascal_train.record` and
 `pascal_val.record` in the `tensorflow/models` directory.
 
+The label map for the PASCAL VOC data set can be found at
+`object_detection/data/pascal_label_map.pbtxt`.
+
 ## Generating the Oxford-IIIT Pet TFRecord files.
 
-The Oxford-IIIT Pet data set can be downloaded from
-[their website](http://www.robots.ox.ac.uk/~vgg/data/pets/), or by using the
-command below. Extract the tar file and run the `create_pet_tf_record` script
-to generate TFRecords.
+The Oxford-IIIT Pet data set is located on
+[their website](http://www.robots.ox.ac.uk/~vgg/data/pets/).
+To download, extract and convert it to TFRecrods, run the following commands
+below:
 
 ```bash
 # From tensorflow/models
@@ -50,3 +53,6 @@ python object_detection/create_pet_tf_record.py \
 
 You should end up with two TFRecord files named `pet_train.record` and
 `pet_val.record` in the `tensorflow/models` directory.
+
+The label map for the Pet dataset can be found at
+`object_detection/data/pet_label_map.pbtxt`.