Regular Expression "not matching"and SPARQL Filter function usage

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OK, I had a problem here when converting bio2rdf.org irefindex data into nanopublication using sparql here: 
in a database, if the item you are looking for has multiple types, but you only need one of those types in your converted data, what you can do is to use a sparql filter function with regex
1. the proper sparql filter syntax is as follows: 
select ?s 
where{
  ?s ?p ?o .
  filter ( #your statements here for filter ) #it's brackets () not curly parenthesis {} 
}

2. the proper regex to match those items that you don't want 
^.*?(?<!Resource)$ # the regex 
filter regex(?interaction_type, "^.*?(?<!Resource)$", "i") # how do you use the regex in the filter
^.*?(?<!Resource)$ means that you are finding stuff that not ending with "Resource" - references: http://www.cnblogs.com/wangqiguo/archive/2012/05/08/2486548.html 
2. , com 。
www.sina.com.cn
www.educ.org
www.hao.cc
www.baidu.com
www.123.com
^.*?(?<!com)$  3 。 com ^.*?(?<=com)$ ^.*?com$  
and the syntax of filter can be referred here: http://www.w3.org/TR/rdf-sparql-query/ , you can search "11.4.13 regex" to get there.

online regex tester is also very helpful when debugging your regex: https://regex101.com/

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