Correct transaction management. cf. bug https://openrdf.atlassian.net/browse/SES-2295 and tomcat default management of PUT request with form data (application/x-www-form-urlencoded encoded)
<html>
<head>
<link href='//fonts.googleapis.com/css?family=Lato:100' rel='stylesheet' type='text/css'>
<style>
body {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
color: #B0BEC5;
display: table;
font-weight: 100;
font-family: 'Lato';
}
.container {
text-align: center;
display: table-cell;
vertical-align: middle;
}
.content {
text-align: center;
display: inline-block;
}
.title {
font-size: 72px;
margin-bottom: 40px;
}
</style>
</head>
<body>
<div class="container">
<div class="content">
<div class="title">Be right back.</div>
</div>
</div>
</body>
</html>