Error at the text [http://www.w3.org/TR/sparql11-federated-query/]

Hello,

There is an error at the introduction:

1 Introduction

The growing suite of SPARQL query services offer consumers an opportunity to
merge data distributed across the web. A small number of extensions to
SPARQL 1.1 enable expression of the merging queries. In particular, a
SERVICE allows one to direct a portion of a query to a particular SPARQL
query service, just as a GRAPH directs queries to particular named graphs.
A BINDINGS keyword adds a compact syntax for *tranfering* results which
constrain a query. The combination of these extensions allows one to compose
a query which delegates parts of the query to a series of services. This
specification defines the syntax and semantics of these extensions.
Att, Fernando