It was created as a coalition between the Polish Workers ' Party ( , PPR ; Soviet -backed ) and politicians from close political sphere of Stanisław Mikołajczyk , former Prime Minister of the Polish government-in-exile based in London .
PRON AUX VERB ADP DET NOUN ADP DET PROPN PROPN PART PROPN ( , PROPN ; PROPN PROPN ) CCONJ NOUN ADP ADJ ADJ NOUN ADP PROPN PROPN , ADJ PROPN PROPN ADP DET PROPN NOUN VERB ADP PROPN .