と[言「い」]うのは => Means, is N3
Information, Report
と言う/と言っていた => you could say; one might say; I'd say ~ N5
... を ... という => called; named; that ~ N4
Speaking
じつをいうと => Frankly speaking N2
Story topic
~のを => Nominalize verbs N5
Nominalization
と([思「おも」]う、[言「い」]う、[考「かんが」]える) => That A N4
Particles
のもと/をもと => Based in/on A N2
Based, Focused, Depending on
を…という => to be called, said, named N3
Command, definition
[事「こと」]だ => A is necessary/good (offering advice/suggestion) N3
Needs, Requirement
と言っている => To say that ... N3
Speaking
というのは => because N2
ということ/というの => convert phrase into noun N3