Q: You are given a paragraph, with numbered sentences, and a question. Write the numbers of the sentences needed to answer the given question. Separate multiple sentence numbers with a comma (", "). E.g. "1, 2" would be the correct response if Sent 1 and Sent 2 are needed to answer the given question (do not include sentences that contain no information that is necessary to answer the question). Sort the sentence numbers in an increasing order (i.e., '1, 2', instead of '2, 1'). Your answer should not contain anything than the sentence numbers separated by a comma (e.g. '1, 2, 3, 4'). The given question requires more than one sentence to answer. So, your answer must contain at least one comma (", ").
Paragraph- Sent 1: { { Plot } } In a two-dimensional world called Flatland populated by living squares , triangles , lines , circles and other two-dimensional shapes , it is three days until the celebration of the year 3000 .
Sent 2: A Square , attorney at law , struggles to instruct his son , A Hexagon , in the art of sight recognition .
Sent 3: The lesson is interrupted by A Square 's brother B , a clerk to President Circle , warning A to stay home during a meeting at the Senate of the Great Southern Republic of Flatland .
Sent 4: The Senate session has been called to discuss the increasing hostilities between the government and the Chromatist movement , led by Senator Chromatistes , an irregular dodecagon .
Sent 5: The movement seeks legalization of the right of Flatlanders to color their sides as they see fit .
Sent 6: Traditionally taboo , laws against it had been relaxed ; this emboldened the Chromatists to demand legalization .
Sent 7: The Great Southern Republic distinguishes itself from its enemy , the Northern Kingdom , by its stances on Chromatism and Irregulars along with a democratic government .
Sent 8: Relaxing the laws has already been perceived as weakness by the Northern Kingdom who are massing on the borders .
Sent 9: Against his brother s warning , A Square meets his new client , the first female charged as a Chromatist ; on his way home he is caught in the melee leaving the Senate .
Sent 10: President Circle s soldiers killed Senator Chromatistes and his supporters , sparking a riot across the city .
Sent 11: A Square just gets home safely , then barricades his family against the chaos for the night . 
Question: Does Square barricade his family after being caught in the melee leaving the Senate?.
A:
9, 11.