∴ He does not live in either Boston or Albany.
or
He does not live in New York,
∴ He lives in either Boston or Albany.
(2) The season must have been either summer, or autumn, or winter, or spring;
It was neither autumn, nor winter, nor spring,
∴ It must have been summer.
or
It was either autumn, or winter, or spring,
∴ It could not have been summer.