"The data indicate that 40 percent of the land that Israel plans to keep in any future deal with the Palestinians is private."

Which kind of sentences is it?simple?complex?compound?complex compound?

How can I define the part of speechs of each word in this sentence?

Here are the clauses:

The Data indicate = main clause

that 40 percent of the land ... is private = one dependent clause

that Israel plans to keep in any future deal with the Palestinians = second dependent clause

The first dependent clause is a noun clause, serving as the direct object after "indicate."

The second dependent clause is an adjective clause modifying "land."

Now -- let me know what you think about each word within each clause and, with this combination of clauses (1 main & 2 dependent), what kind of sentence you think it is.

http://grammar.ccc.commnet.edu/grammar/
The menu in Word & Sentence Level will have all the information you need.

I'll check back to see what you decide.

=)