21_a_lob_j01
These may be estimated from equation ( 4 ) or the following derived equations : — <ast><bcomment>formula<ast><ecomment> <ast><bcomment>formula<ast><ecomment> .

%3 0021_0002__may_0021_0003__be_0021_0004__estimated may_be_estimated 0021_0001__These these 0021_0002__may_0021_0003__be_0021_0004__estimated->0021_0001__These [arg1] 0021_0010__or or 0021_0002__may_0021_0003__be_0021_0004__estimated->0021_0010__or from[dir] 0021_0006__equation_0021_0008__4 equation_4 0021_0010__or->0021_0006__equation_0021_0008__4 [conj1] 0021_0011__the_0021_0014__equations the_equations 0021_0010__or->0021_0011__the_0021_0014__equations [conj2] 0021_0012__following following 0021_0011__the_0021_0014__equations->0021_0012__following [attrib] 0021_0013__derived derived 0021_0013__derived->0021_0011__the_0021_0014__equations [arg0] z_0021_1009 _ z_0021_1009->0021_0011__the_0021_0014__equations [prn]
arc(r_0021_0002__may_r_0021_0003__be_r_0021_0004__estimated,r_0021_0001__These,arg1).
arc(r_0021_0002__may_r_0021_0003__be_r_0021_0004__estimated,r_0021_0010__or,r_0021_0005__from__dir).
arc(r_0021_0010__or,r_0021_0006__equation_r_0021_0008__4,conj1).
arc(r_0021_0010__or,r_0021_0011__the_r_0021_0014__equations,conj2).
arc(r_0021_0011__the_r_0021_0014__equations,r_0021_0012__following,attrib).
arc(r_0021_0013__derived,r_0021_0011__the_r_0021_0014__equations,arg0).
arc(z_0021_1009,r_0021_0011__the_r_0021_0014__equations,prn).


IP-MAT NP-SBJ D;_nphd_ These MD;~cat_Vi may IP-INF-CAT BE;~cat_Ve_passive_ be IP-PPL-CAT NP-LGS * VVN estimated PP-DIR P-ROLE from NP NLYR NP N equation PULB -LRB- NUM 4 PURB -RRB- CONJP CONJ or NP D the ADJP ADJ following IP-PPL VVN derived NS equations PUNC : PUNC <mdash> PRN NP FO <ast><bcomment>formula<ast><ecomment> FO <ast><bcomment>formula<ast><ecomment> PUNC .
( (IP-MAT (NP-SBJ (D;_nphd_ These;{these}))
          (MD;~cat_Vi may;{may})
          (IP-INF-CAT (BE;~cat_Ve_passive_ be;{be})
                      (IP-PPL-CAT (NP-LGS *)
                                  (VVN estimated;{estimate})
                                  (PP-DIR (P-ROLE from;{from})
                                          (NP (NLYR (NP (N equation;{equation})
                                                        (PULB -LRB-)
                                                        (NUM 4)
                                                        (PURB -RRB-))
                                                    (CONJP (CONJ or;{or})
                                                           (NP (D the;{the})
                                                               (ADJP (ADJ following;{following}))
                                                               (IP-PPL (VVN derived;{derive}))
                                                               (NS equations;{equation})
                                                               (PUNC :)
                                                               (PUNC <mdash>)
                                                               (PRN (NP (FO <ast><bcomment>formula<ast><ecomment>)
                                                                        (FO <ast><bcomment>formula<ast><ecomment>))))))))))
          (PUNC .))
  (ID 21_a_lob_j01))