You can't get there from here.

How do you get from Logan Airport to the North End?

Do you take the Government Center exit?

Yup. You do.

Take the Sumner Tunnel. At end of the tunnel, stay to the LEFT and follow the signs to "Government Center/Route 93 South". At the top of the ramp, turn sharp right onto Hanover Street.

They just want to make it hard for you by leaving NORTH END off the sign.

Typical.