what calendar system has a month with less than 31 days and is also used in the julian calender system?
Entity Entity
m.037d3 m.06jx2
Gregorian calendar Revised Julian calendar
class class entity literal
time.calendar time.month m.03_n6 31^^http://www.w3.org/2001/XMLSchema#integer
time.calendar time.month time.calendar type.int
Calendar System Month julian calender 31
none none none <=
time.month.calendar_system time.month.calendar_system time.month.number_of_days_in_month
Calendar System Calendar System Number Of Days In Month
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX : <http://rdf.freebase.com/ns/> 
SELECT (?x0 AS ?value) WHERE {
SELECT DISTINCT ?x0  WHERE { 
?x0 :type.object.type :time.calendar . 
?x1 :type.object.type :time.month . 
VALUES ?x2 { :m.03_n6 } 
FILTER (?x3 <= "31"^^<http://www.w3.org/2001/XMLSchema#integer>)
?x1 :time.month.calendar_system ?x0 . 
?x1 :time.month.calendar_system ?x2 . 
?x1 :time.month.number_of_days_in_month ?x3 . 
FILTER ( ?x0 != ?x1 && ?x0 != ?x2 && ?x0 != ?x3 && ?x1 != ?x2 && ?x1 != ?x3 && ?x2 != ?x3  )
}
}
(AND time.calendar (JOIN (R time.month.calendar_system) (AND (JOIN time.month.calendar_system m.03_n6) (le time.month.number_of_days_in_month 31^^http://www.w3.org/2001/XMLSchema#integer))))