Assertion: tank's system | /r/HasProperty | a ppb-1 gunner's sight
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Source sentences:
text: The turret is fitted with the 2K23 system, which consists of an autoloader with 22 rounds (the remaining 18 rounds are stored in the hull), a 1V539 ballistic computer, a cross-wind sensor, a 2E52-2 stabilising system, a 1D16-3 laser range finder, a 1K13-2 gunner's sight/guidance device, a PPB-1 gunner's sight and an OU-5-1 IR searchlight.