diff --git a/body.tex b/body.tex
index d7599e5..1f54e2e 100644
--- a/body.tex
+++ b/body.tex
@@ -520,7 +520,7 @@ top \(k\) selection happen like in vanilla SSD.
 \label{chap:experiments-results}
 
 This chapter explains the used data sets, how the experiments were
-set up, and what the results were.
+set up, and what the results are.
 
 \section{Data sets}
 
@@ -533,7 +533,7 @@ keypoint detection, and panoptic segmentation (scene segmentation).
 The data of any data set has to be prepared for use in a neural
 network. Typical problems of data sets include, for example,
 outliers and invalid bounding boxes. Before a data set can be used,
-these problems need to be removed.
+these problems need to be resolved.
 
 For the MS COCO data set, all annotations were checked for
 impossible values: bounding box height or width lower than zero,
@@ -545,7 +545,7 @@ bounding box width or height was set to (image width - \(x_{min}\)) or
 (image height - \(y_{min}\)) respectively;
 in the other cases the annotation was skipped.
 If the bounding box width or height afterwards is
-lower than or equal to zero the annotation is skipped.
+lower than or equal to zero the annotation was skipped.
 
 SSD accepts 300x300 input images, the MS COCO data set images were
 resized to this resolution; the aspect ratio was not kept in the