query help

[Abhishek tiwari]

Hi ,
i have multi valued field want to sort the docs order the particular
text eq:'B1' is added.
how i should query? ad_text is multivalued field.

t

<doc>
<arr name="ad_text">
<str>B1</str>
<str>B2</str>
<str>B3</str>
</arr>
</doc>
<doc>
<arr name="ad_text">
<str>B2</str>
<str>B1</str>
<str>B3</str>
</arr>
</doc>

<doc>
<arr name="ad_text">
<str>B1</str>
<str>B2</str>
<str>B3</str>
</arr>
</doc>
<doc>
<arr name="ad_text">
<str>B3</str>
<str>B2</str>
<str>B1</str>
</arr>
</doc>