if condition true, print 1st sentence and then print 2nd sentence it condition true

I have a diff result like below from Python's diff lib-

-     "text": "abc xyz efg "
+     "text": "abc xyz efg"
-     "header": true,
?               ^^^

+     "header": false,
?               ^^^^

-     "text": "1.1  bacdefg"
-   },
-   {
-     "header": false,
-       "This is one example sentence which needs to be extracted."
?                                            --------------                                               -

+       "This is one example sentence which needs to be extracted."
?                                                                                                    +                                                                            ++++++++++

-       "This is one example sentence which needs to be extracted."
?                                              --------------                                      -

+       "This is one example sentence which needs to be extracted."
?                                                                    ++++++++++                          +

+     "header": true,
+     "text": "some text"

I need to extract lines on three ways-

1. which starts with "-" and the following line starts with "?" in a list named updated
2. which starts with "+" and no "?" in the consecutive sentence in a list named deleted
3. which starts with "-" and no "?" in the consecutive sentence in a list named inserted

header : true / false can be ignored

I am new to Python and I somehow managed to parse two PDFs to JSONs and do a diff using difflib but unable to write a for loop and if condition to look for the consecutive lines of only text fields.

EDIT-

diffile=[]
diff = difflib.Differ()    
for line in diff.compare(f1_text, f2_text):
         #json.dump(line,f, indent=2)
    if line.startswith(("-", "+", "?")):
       diffile.append(line)




updated=[]
for i in range(len(diffile) - 1):
    value = diffile[i:i+2]
    for line in value:
        if line.startswith (("-")) and line.startswith ("?"):
            updated.append (line)

I did the above but I am not able to extract only the next line starting with "?" after "-". It is giving me all the lines starting with "?".