Question:
Which political party did Claudio Petruccioli belong to in Mar, 1991?

Context:
 Claudio Petruccioli is a member of the Democrats of the Left from Jan, 1998 to Jan, 2007. 
 Claudio Petruccioli is a member of the Italian Communist Party from Jan, 1959 to Jan, 1991. 
 Claudio Petruccioli is a member of the Democratic Party of the Left from Jan, 1991 to Jan, 1998.

Answer:
Question:
Which political party did Claudio Petruccioli belong to in Mar, 1991?

Context:
 Claudio Petruccioli is a member of the Democrats of the Left from Jan, 1998 to Jan, 2007. 
 Claudio Petruccioli is a member of the Italian Communist Party from Jan, 1959 to Jan, 1991. 
 Claudio Petruccioli is a member of the Democratic Party of the Left from Jan, 1991 to Jan, 1998.

Answer:
user
Democratic Party of the Left
assistant
Question:
Which political party did Claudio Petruccioli belong to in Mar, 1991?

Context:
 Claudio Petruccioli is a member of the Democrats of the Left from Jan, 1998 to Jan, 2007. 
 Claudio Petruccioli is a member of the Italian Communist Party from Jan, 1959 to Jan, 1991. 
 Claudio Petruccioli is a member of the Democratic Party of the Left from Jan, 1991 to Jan, 1998.

Answer:
user
Italian Communist Party
Democrats of the Left
assistant
Question:
Which political party did Claudio Petruccioli belong to in Mar, 1991?

Context:
 Claudio Petruccioli is a member of the Democrats of the Left from Jan, 1998 to Jan, 2007. 
 Claudio Petruccioli is a member of the Italian Communist Party from Jan, 1959 to Jan, 1991. 
 Claudio Petruccioli is a member of the Democratic Party of the Left from Jan, 1991 to Jan, 1998.

Answer:
user
Democratic Party of the Left
assistant