In this task, you will be given a set of steps that are required to answer a specific question. Your job is to generate that question. Each given step refers to either an entity (known or unknown), a propery of an entity or a query operation (count, group, union, etc.) Knowing those operations and how they appear in the input may help you generate more accurate questions.
 Select: A select step is used to return a set of objects. There are no references to previous steps in a select step. template: Return [attributes]
 Filter: A filter step is used to return results from a previous step to which a certain condition applies. template: Return [#step] [condition]
 Project: A project step should return certain attributes of the results of a previous step. template: Return [attributes] of [#step]
 Aggregate: An aggregate step returns an aggregator function applied on a step's result. template: Return the [aggregator] of [#step].
 Group: A group step is an aggregator applied on attributes. template: Return the [aggregator] of [#step] for each [attribute]
 Superlative: A superlative step is used to return the result with a highest/lowest attribute among other results. template: Return [#step1] [where] [#step2] [is] [highest / lowest]
 Comparative: A comparative step is used when we need to compare an attribute with a number to filter results. template: Return [#step1] [where] [#step2] [comparator] [number] 
 Union: A union step is used to return results of two steps together. template: Return [#step1] [or / ,] [#step2]
 Intersection: An intersection step returns the result that two steps have in common. template: Return [attribute] of both [#step1] and [#step2]
 Discard: A discard step returns result of a step and excludes result of another step from it. template: Return [#step1] besides [#step2]
 Sort: A sort returns result of another step in a specific order. template: Return [#step1] [ordered / sorted by] [#step2]
 Is true: An is true step checks a condition on another result and returns a true or false. template: Return [is / if] [condition]
 Arithmetic: An arithmatic step operates an arithmatic operation on one or more steps. template: Return the [arithmetic op.] of [#step1] [and] [#step2].

[Q]: #1 return the  us 
#2 return rivers of #1 
#3 return size of #2 
#4 return #2 where  #3 is the  highest
[A]: what is the us biggest river?


[Q]: #1 return woman 
#2 return hair of #1 
#3 return #1 where  #2 is long 
#4 return #1 where  #2 is dark 
#5 return #1 in  both  #3 and #4 
#6 return graduation gown 
#7 return #6 that is black 
#8 return mortarboard 
#9 return #8 that is black 
#10 return shoes 
#11 return #10 that are black 
#12 return #5 that is wearing #7 
#13 return #12 that is wearing #9 
#14 return #13 that is wearing #11 
#15 return #14 that is in  an outdoor setting 
#16 return images 
#17 return images of #15 
#18 return number of  #16 
#19 return number of  #17 
#20 return if  #19 is equal to  #18
[A]: If in each image, a woman with long dark hair is wearing a black graduation gown and mortarboard and black shoes in an outdoor setting.


[Q]: #1 return the  Steelers 
#2 return points of #1 
#3 return sum of #2 
#4 return the  Broncos 
#5 return points of #4 
#6 return sum of #5 
#7 return which is highest of #3 ,  #6
[A]:
Who scored more points, the Steelers or the Broncos?