[NTG-context] An Index problem (repost)

[luigi scarso]

I have the following
\starttext
%%\placemaincontent
\chapter{AAA}
\section{Hause one} Foo one \page
\section{Hause two} Foo  two \page
\section{Hause three} Foo  three \page
\section{Hause four} Foo  four\page
\section{Dog boo} Koo   \page
\section{Dog foo} Boo \page
\section{Money ba} Boo \page
\section{Mail bee} Ugh \page
\stoptext
In main content I should like to have
\bf{AAA} %% no problem here
\bf{HAUSE} one ..... page x
 Hause two ..............page x
 Hause three............page x
 Hause four ..............page x
\bf{DOG} boo ...........page x
 Dog foo.....................page x
\bf{MONEY} ba.........page x
\bf{MAIL} bee.............page x

ie, the very first word in bold face and upper case,
the following in normal face if and only of the very first word was
equal to the first
word of actual item (I know, it's strange).

Many thanks in advance
luigi