Fixed #68: Implement SheerkaQL

Fixed #70: SheerkaFilterManager : Pipe functions
Fixed #71: SheerkaFilterManager : filter_objects
Fixed #75: SheerkaMemory: Enhance memory() to use the filtering capabilities
Fixed #76: SheerkaEvaluateConcept: Concepts that modify the state of the system must not be evaluated during question

sheerka_backup/default.sb

@@ -3,9 +3,9 @@ push_ontology("english")
 def concept q from q ? as question(q) pre is_question() auto_eval True
 set_is_lesser(__PRECEDENCE, q, 'Sya')
 
-def concept the x ret memory(x)
-def concept a x where 'x is a concept' ret x
-def concept an x where 'x is a concept' ret x
+def concept the x where isinstance(x, Concept) ret memory(x)
+def concept a x where isinstance(x, Concept) ret x
+def concept an x where isinstance(x, Concept) ret x
 set_is_greatest(__PRECEDENCE, c:the x:, 'Sya')
 set_is_greatest(__PRECEDENCE, c:a x:, 'Sya')
 set_is_greatest(__PRECEDENCE, c:an x:, 'Sya')
@@ -37,18 +37,24 @@ set_is_greater_than(__PRECEDENCE, c:x and y:, c:x or y:, 'Sya')
 set_is_less_than(__PRECEDENCE, c:q:, c:x or y:, 'Sya')
 
 # some words
+def concept human
 def concept male
 def concept female
 def concept man
-man is a male
 def concept woman
-woman is a female
-def concept human
-man is a human
-woman is a human
 def concept boy
-def concept boys
 def concept girl
+man is a male
+man is a human
+boy is a male
+boy is a human
+woman is a female
+woman is a human
+girl is a female
+girl is a human
+
+
+def concept boys
 def concept girls
 def concept shirt
 def concept table
@@ -66,3 +72,7 @@ def concept sunday
 def concept how is x pre is_question() as smart_get_attr(x, adjective)
 def concept what x is y pre is_question() where x is an adjective as smart_get_attr(y, x)
 def concept what is the x of y pre is_question() where x is an adjective as smart_get_attr(y, x)
+
+#
+def concept he ret memory("self is a human and self is a male")
+def concept she ret memory("self is a human and self is a female")