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The previous expression constraint (which finds the set of body sites for any subtype of bone fracture) has an equivalent representation using the 'dot notation' of:

Scg expression
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   < 91723000 |Anatomical structure| AND (< 125605004 |Fracture of bone|.363698007 |Finding site|)
Because all values of
Scg expression
363698007 |Finding site|
 must be
Scg expression
< 91723000 |Anatomical structure|
 (according to the
Glossary ref
SNOMED CT concept model
), this expression constraint can be further simplified to:
Scg expression
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   < 125605004 |Fracture of bone|.363698007 |Finding site|
The next example below finds the set of substances, which are active ingredients of a 'TRIPHASIL tablet'.
Scg expression
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   < 105590001 |Substance|: 
         R 127489000 |Has active ingredient| = 249999999101 |TRIPHASIL tablet|
This expression constraint is represented in the long syntax as:
Scg expression
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   descendantOf 105590001 |Substance|:
         reverseOf 127489000 |Has active ingredient| = 249999999101 |TRIPHASIL tablet|
An equivalent way of representing this constraint, using the 'dot notation' is:
Scg expression
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    < 105590001 |Substance| AND (249999999101 |TRIPHASIL tablet|.127489000 |Has active ingredient|)
or (using the
Glossary ref
SNOMED CT concept model
 to simplify):
Scg expression
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   249999999101 |TRIPHASIL tablet|.127489000 |Has active ingredient|

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