Make a dictionary that maps each term in the paper titles to a list of papers whose titles contain that term (identified by the paper ID).

Requirements:

Name your dictionary term_index

If you are successful, your dictionary should look something like this (note: this not a complete output since the dictionary will be quite large):

{'a': ['2048723827', '2562688705', '2415016544', '1523515082', '2150562299', '2155071529', '2112032833', '2032695641', '2123307077', '2292280558', '2745131988', '232477822', '1942772871', '2144756869', '1998834343', '2530983154', '223854805', '1928311886', '2133265130', '2010900220'], 'field': ['2048723827', '2123307077', '2529452593'], 'trial': ['2048723827'], 'of': ['2048723827', '2562688705', '1445579003', '2055620204', '1960191312', '2562123916', 

here some of the file to work off of

a field trial of privacy nudges for facebook || 2048723827 || alessandro acquisti a query theory perspective of privacy decision making || 2562688705 || alessandro acquisti an experiment in hiring discrimination via online social networks || 1119948448 || alessandro acquisti beyond the privacy paradox objective versus relative risk in privacy decision making || 2336321440 || alessandro acquisti beyond the turk an empirical comparison of alternative platforms for crowdsourcing online behavioral research || 1445579003 || alessandro acquisti building the security behavior observatory an infrastructure for long term monitoring of client machines || 2055620204 || alessandro acquisti choice architecture framing and cascaded privacy choices || 2337976014 || alessandro acquisti do or do not there is no try user engagement may not improve security outcomes || 2411354024 || alessandro acquisti empirical analysis of data breach litigation || 1960191312 || alessandro acquisti engineering information disclosure norm shaping designs || 2407481741 || alessandro acquisti