I have a XML like:

<bodyText>   <1 beginIndex="0" endIndex="723">

Frank went to the store to buy a teddy bear to gift it to the children because it is the best gift which can be given to the children</1> 

how can i search particular strings in the XML ? For example: If a user enters "Frank went to the store". The 2nd xml element contains this string and it should return 2(it should return paragraph no). How to find out ?