O, bildiğim kadarıyla, güvenilir bir arkadaştır.
- He is, so far as I know, a reliable friend.
Bildiğim kadarıyla, o hâlâ bekâr.
- So far as I know, she is still unmarried.
insofar as (or that), to the extent that, to such an extent.
... Benghazi. Does the buck stop with your secretary of state as far as what went on here? ...
... as far as 60 miles a day, ...