{"pre_text": ["five-year performance comparison 2013 the following graph provides an indicator of cumulative total shareholder returns for the corporation as compared to the peer group index ( described above ) , the dj trans , and the s&p 500 .", "the graph assumes that $ 100 was invested in the common stock of union pacific corporation and each index on december 31 , 2007 and that all dividends were reinvested .", "purchases of equity securities 2013 during 2012 , we repurchased 13804709 shares of our common stock at an average price of $ 115.33 .", "the following table presents common stock repurchases during each month for the fourth quarter of 2012 : period total number of shares purchased [a] average price paid per share total number of shares purchased as part of a publicly announced plan or program [b] maximum number of shares that may yet be purchased under the plan or program [b] ."], "post_text": ["[a] total number of shares purchased during the quarter includes approximately 105978 shares delivered or attested to upc by employees to pay stock option exercise prices , satisfy excess tax withholding obligations for stock option exercises or vesting of retention units , and pay withholding obligations for vesting of retention shares .", "[b] on april 1 , 2011 , our board of directors authorized the repurchase of up to 40 million shares of our common stock by march 31 , 2014 .", "these repurchases may be made on the open market or through other transactions .", "our management has sole discretion with respect to determining the timing and amount of these transactions. ."], "table": [["period", "total number ofsharespurchased [a]", "averageprice paidper share", "total number of sharespurchased as part of apublicly announced planor program [b]", "maximum number ofshares that may yetbe purchased under the planor program [b]"], ["oct . 1 through oct . 31", "1068414", "121.70", "1028300", "16041399"], ["nov . 1 through nov . 30", "659631", "120.84", "655000", "15386399"], ["dec . 1 through dec . 31", "411683", "124.58", "350450", "15035949"], ["total", "2139728", "$ 121.99", "2033750", "n/a"]], "table_ori": [["<i>Period</i>", "<i>Total Number ofSharesPurchased [a]</i>", "<i>AveragePrice PaidPer Share</i>", "<i>Total Number of Shares</i><i>Purchased as Part of a</i><i>Publicly Announced Plan</i><i>or Program [b]</i>", "<i>Maximum Number of</i><i>Shares That May Yet</i><i>Be Purchased Under the Plan</i><i>or Program [b]</i>"], ["Oct. 1 through Oct. 31", "1,068,414", "121.70", "1,028,300", "16,041,399"], ["Nov. 1 through Nov. 30", "659,631", "120.84", "655,000", "15,386,399"], ["Dec. 1 through Dec. 31", "411,683", "124.58", "350,450", "15,035,949"], ["Total", "2,139,728", "$121.99", "2,033,750", "N/A"]]}

Question: what percentage of the total number of shares purchased were purchased in october?
Evidence:
table_1: period the oct . 1 through oct . 31 of total number ofsharespurchased [a] is 1068414 ; the oct . 1 through oct . 31 of averageprice paidper share is 121.70 ; the oct . 1 through oct . 31 of total number of sharespurchased as part of apublicly announced planor program [b] is 1028300 ; the oct . 1 through oct . 31 of maximum number ofshares that may yetbe purchased under the planor program [b] is 16041399 ;
table_4: period the total of total number ofsharespurchased [a] is 2139728 ; the total of averageprice paidper share is $ 121.99 ; the total of total number of sharespurchased as part of apublicly announced planor program [b] is 2033750 ; the total of maximum number ofshares that may yetbe purchased under the planor program [b] is n/a ;
Program: divide(1068414, 2139728)
Answer:
str_answer: 50%
exe_answer: 0.49932