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<HTML><HEAD><TITLE>Answer to Exercise 11</TITLE></HEAD>
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<BODY BGCOLOR="#FFFFFF">
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<TABLE><TR><TD Valign="top"><IMG SRC="../icons/exercise.gif" ALT="??"><TD bgcolor="#FAA89B"><B>ANSWER TO EXERCISE 11</B><TR><TD><TD>
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Object -> glass_box "glass box with a lid"
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with name "glass" "box" "with" "lid"
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has container transparent openable open;
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Object -> steel_box "steel box with a lid"
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with name "steel" "box" "with" "lid"
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has container openable open;
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<HR>Back to <A HREF="../section11.html#ex11">the exercise in section 11</A><HR>
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<SMALL><I>Mechanically translated to HTML from third edition as revised 16 May 1997. Copyright © Graham Nelson 1993, 1994, 1995, 1996, 1997: all rights reserved.</I></SMALL></BODY></HTML>