Complex sentence: The women's hospice was converted into the central prison of Jerusalem in response to the Jewish underground, comprising groups like the Haganah, the Palmach, the Lehi, and the Irgun intensifying their activities, which led to many of their members being jailed.
Split into simpler sentences: The women's hospice was converted into the central prison of Jerusalem. In response, the Jewish underground, comprising groups like the Haganah, the Palmach, the Lehi, and the Irgun increased their activities, which led to many of their members being jailed.