Complex sentence: In February and March 1988 the Polish government announced official "apologies" for the anti-Semitic "excesses" of 1968: first in Israel at a conference on Polish Jewry, and then in a statement printed in "Trybuna Ludu".
Split into simpler sentences: In February and March 1988 the Polish government announced official "apologies" for the anti-Semitic "excesses" of 1968. First in Israel at a conference on Polish Jewry, and then in a statement printed in "Trybuna Ludu".