Sentence:  Hope would n't hear of it , and she took the heater back to Grandma 's room , and Grandma took it back to Hope 's room , and the two of them dragged it back and forth until Grandma tipped it over and almost <WSD>set</WSD> her bedspread on fire . 
Meaning of the word marked with <WSD> tags:  set fire to; cause to start burning